10-03-05 --- Release ksh93t+ ---

10-03-05 A varibale unset memory leak has been fixed and tests/leaks.sh

has been added to verify the fix.

10-03-04 Documentation, comment, and disgnostic spelling typos corrected.

10-02-14 Fix sh_getenv() initialization to cooperate with the 3d fs.

10-02-12 A bug in which the get discipline function was not invoked for

associative array subscripts for unset array elements has been fixed.

10-02-12 A bug which could occur if the last line of a script was an eval

that executed multiple commands has been fixed.

10-02-02 A buffer overflow in read and another in binary type base64

encoding were fixed.

10-01-20 A bug in the evaluation of arithmetic expression in which the

subscript was evaluated twice for $((foo[x++]++)) has been fixed.

10-01-19 A workaround for a double-free of a trap in both a subshell and its

parent has been added.

10-01-18 A bug in type handling of typeset -H has been fixed.

10-01-15 The "adding empty subscript" warning now only emitted with -x set.

10-01-01 A bug in the parser in which '$((case i in i):;esac);:))' was not

parsed correctly was fixed.

10-01-01 A bug in the parser in which '$(( 2 , 3.6 ))' dumped core for locales

with radix char , and thousands separator . has been fixed.

09-12-28 A bug in the handling of SIGCLD on systems that generated SIGCLD

while blocked waiting for process to complete has been fixed.

09-12-24 ast setlocale() reworked to differentiate env var changes from user

override.

09-12-18 A bug with the SHOPT_BGX option set which disabled traps for signals

< SIGCHLD when a trap for a signal > SIGCHLD was set has been fixed.

09-12-18 A bug where [[ -v var ]] was incorrect for some variables (including

LC_* vars) has been fixed.

09-12-15 A bug that produced a syntax error when a multibyte character

straddled a buffer boundary has been fixed.

09-12-11 A bug where the subscript of an unset variable was not evaluated has

been fixed.

09-12-09 A bug where shcomp dumped core on certain syntax errors has been fixed.

09-12-07 A bug where a parent shell environment var reset in a subshell removed

the value in subsequent children of the parent shell has been fixed.

09-12-04 A bug in which in some cases a trap in a function executed in

a subshell could trigger twice has been fixed.

09-12-03 A bug in which SHLVL exported with some attributes could cause

the shell to abort at startup has been fixed.

09-12-02 A bug with pipefail in which the shell could hang waiting for the

writer to complete before the last reader command has been fixed.

09-11-30 A bug in which a trap could be inherited by the first element of

a pipeline when the command had more than 63 arguments that did

not contain any macro expansions has been fixed.

09-11-19 When read from a terminal was called from with a while or foo loop,

and an edit mode was on, a backspace or erase no longer will

overwrite the prompt.

09-11-17 Change .paths parse to handle BUILTIN_LIB=foo BUILTIN_LIB=foo-1.2.

09-11-17 Inside a function, typeset foo.bar will bind foo to global variable

foo if local variable foo does not exist, instead of creating a

local variable.

09-11-17 "read -n1" from the terminal has been fixed to read exactly one character.

09-11-11 Job control now works for subshell commands, (...).

09-11-11 If set -e is on for an interactive shell errors in special builtins

now cause the shell to exit.

09-11-11 A bug in which an interrupt handler processed during the read builtin

when IFS did not contain a new line has been fixed.

09-11-09 A bug in which a variable that has been unset in a subshell and then

exported from that subshell does not show up in the environment

has been fixed.

09-11-02 ``,2'' is now a valid numeric constant for locales with

decimal_point=','.

09-11-02 A bug where "return" in .profile did not restore the shell state

has been fixed.

09-10-31 A bug that corrupted saved exit status when pids wrapped around has

been fixed.

09-10-26 A bug in { LANG LC_ALL LC_category } ordering has been fixed in -last.

09-10-16 A bug where notification to libast that the environment has changed

has been fixed.

09-10-12 A bug in which a function loaded in a subshell could leave side

effects in the parent shell has been fixed.

09-10-12 A bug in converting a printf %d operand to a number when the operand

contains multiple subscripts for the same variable has been fixed.

09-10-09 A bug in the handling of the escape character \ in directory prefixes

in command completion has been fixed.

09-10-09 $PATH processing has been changed to delay dir stat() and .paths

lookup until the directory is needed in the path search.

09-09-28 Call the ast setlocale() intercept on unset too.

09-09-24 A bug in which LANG=foo; LC_ALL=foo; unset LC_ALL; did not revert

LC_CTYPE etc. to the LANG value has been fixed.

09-09-17 A bug in which unsetting SVLVL could cause a script invoked by

name without #! to core dump has been fixed.

09-09-16 A bug in which a pipeline in a here-document could hang when the

pipefail option was on has been fixed.

09-09-09 A bug in the processing of line joining in here documents which

occurred when a buffer began with <escape><new-line> has been fixed.

09-09-09 A leading ; with commands in a brace group or parenthesis group

no longer causes an error. It now is used for the "showme" option.

09-09-09 A bug in which a subshell containing a background process could

block until the background process completed has been fixed.

09-09-04 A bug in handing ${var[sub]}, where var is a nameref has been fixed.

09-09-03 A bug which caused an index array to have the wrong number of elements

when it was converted from a compound variable by adding an another

element has been fixed.

09-09-03 Specifying export for a compound variable now generates an error.

09-09-02 $"..." localizations strings are no longer recognized inside `...`.

09-09-01 A bug in the for loop optimizer in the handling of type static

variables has been fixed.

09-09-01 An error message is not displayed when * and @ are used as subscripts.

09-09-01 Several bugs in the processing for types that included an associative

array of another type has been fixed.

09-09-01 A bug in the tracing of [[ a < b ]] and [[ a > b ]] has been fixed.

09-08-26 The .sh.file variable was not being set for a script that was run

by name and didn't start with #! and this has been fixed.

09-08-25 A bug in which a function called to deeply from command substitution

did not display an error message has been fixed.

09-08-24 When processing profiles, ksh93 now violates the POSIX standard and

treats &> as a redirection operator similar to bash.

09-08-23 A bug in the handling of the trap on SIGPIPE that could lead to a

memory fault has been fixed.

09-08-21 A bug in the handling of the comma operator in arithmetic expressions

that could cause a core dump on some systems has been fixed.

09-08-20 A bug in which a compound variable containing an array of a type

that doesn't have any elements now expands correctly.

09-08-19 A bug which disabled function tracing inside a function after

a call to another function has been fixed.

09-08-19 A bug in which initializing a compound variable instance to another

compound variable by name has been fixed.

09-08-18 A bug in which compound variable instances could be lost after

an instance that invoked a type method discipline has been fixed.

09-08-18 A bug in which a discipline function for a type applied to an

array instance when invoked in a function ignored the subscript

has been fixed.

09-08-18 A scoping error with variables in arithmetic expression with

type variables when reference with a name reference has been fixed.

09-08-10 Several memory leaks were fixed primarily related to subshells.

09-08-06 A bug in which setting the trap on CHLD to ignore could cause

a script to hang has been fixed.

09-07-08 A bug in the processing of name reference assignments when it

contained pattern expansions with quoting has been fixed.

09-06-22 The default width for typeset -X has been changed so that there

should be no loss of precision when converting to a string.

09-06-19 A bug in the printing of array elements for binary variables with

printf %B has been fixed.

09-06-19 A bug which caused a core dump with trap DEBUG set with an array

assignment with no elements has been fixed.

09-06-19 A bug with read with typeset -b -Z<num> has been fixed.

09-06-19 Two bugs related to read -b for array variables has been fixed.

09-06-19 A bug with typeset for compound variables containing arrays of

compound variables has been fixed.

09-06-18 A bug in appending a compound variable to a an indexed array of

compound variables has been fixed.

09-06-18 A bug which occurs when appending a compound variable to an indexed

array element has been fixed.

09-06-18 Setting VISUAL to a value other than one ending in vi or emacs will

no longer unset the edit mode.

09-06-17 A bug in typeset -m when moving a local compound variable to a

global compound variable via a name reference has been fixed.

09-06-17 A bug in appending to nodes of an array of compound variables when

addressing them via nameref has been fixed.

09-06-17 A bug in typeset -p var, when var is an array of compound variables

in which the output only contained on array element has been fixed.

09-06-17 The prefix expansion ${!y.@} now works when y is a name

reference to an element of an array.

09-06-16 Traps on signals that are ignored when the shell is invoked

no longer display. Previously they were ignored as required but

would be listed with trap -p.

09-06-12 A bug in vi edit mode in which hitting the up arrow key at the

end of a line longer than 40 characters which caused a core dump

has been fixed.

09-06-11 A bug in which "eval non-builtin &" would create two processes,

one for the & and another for non-builtin has been fixed.

09-06-08 When var is an identifier and is unset, ${var} no longer tries to

run command substitution on the command var.

09-06-08 Process substitution arguments of the form <(command) can now be

used following the < redirection operator to redirect from command.

09-05-13 A bug in which redirections of the form 2>&1 1>&5 inside command

substitution could cause the command substitution to hang has been

fixed.

09-05-12 To conform with POSIX, the -u option only checks for unset variables

and subscript elements rather than checking for all parameters.

09-05-12 A bug which could cause a core dump when a variable whose name

begins with a . was referenced as part of a name reference inside

a function has been fixed.

09-05-01 A bug that caused a core dump when SIGWINCH was received and

both vi and emacs mode were off has been fixed.

09-04-22 Default alias compound='typeset -C' added.

09-04-15 A bug that caused ${...;} to hang for large files has been fixed.

09-04-08 A change was made in the -n option which printed out an incorrect

warning with <>.

09-04-07 The emacs edit command M-_ and M_. and the vi command _ was fixed

to handle the case there there is no history file.

09-04-05 A bug in handling new-lines with read -n has been fixed.

09-04-05 The ENV variable defaults the the file named by $HOME/.kshrc rather

then to the string $HOME/.kshrc.

09-03-31 A bug in which a nested command substitution with redirections could

leave a file descriptor open has been fixed.

09-03-24 ksh now only uses the value of the _ variable on startup if it can

verify that it was set by the invoking process rather than being

inherited by some other ancestor.

09-03-24 When ksh is invoked without -p and ruid!=euid, and the shell is

compiled without SHOPT_P_UID or ruid<SHOPT_P_UID, the shell now

enables the -p option. The previous version instead set the

euid to the ruid as it does for set +p.

09-03-24 When SHOPT_P_UID is defined at compile time and the shell is started

without -p and ruid!=euid and ruid>=SHOPT_P_UID then euid is set

to ruid. A bug that did the wrong test (ruid<SHOPT_P_UID) was fixed.

09-03-17 The sleep(1) builtin now accept and ISO 8601 PnYnMnDTnHnMnS

duration or date(1) compatible date/time operand.

09-03-10 If a variable that was left or right justified or zero-filled was

changed with a typeset statement that was left or right justified

or zero-filled, then the original justification no longer affects

the result.

09-03-10 A bug in the handling of traps when the last command in a script

is a subshell grouping command has been fixed.

09-03-03 A bug in which an expansion of the form ${!prefix@} could generate

an exception after the return from a function has been fixed.

09-02-02 A bug in restricted mode in which the value of ENV could be

changed from within a function has been fixed.

09-02-02 A bug in which an erroneous message indicating that a process

terminated with a coredump has been fixed.

09-02-02 The exit status when exit was called without an argument from

a signal handler was incorrect and has been fixed.

09-02-02 A bug in which a function autoloaded in a subshell could cause

a core dump when the subshell completed has been fixed.

09-02-02 A bug in which 2>&1 inside a command substitution wasn't working

correctly has been fixed.

09-02-02 A bug in the call stack of arithmetic function with 2 args

returning int has been fixed.

09-01-30 A bug in which 'eval print \$0' inside a function was giving the

wrong value for $0 has been fixed.

09-01-28 A bug in which a command substitution could return an exit status

of 127 when the pipefail option is enabled has been fixed.

09-01-26 ksh93 now generates an error message if you attempt to create

a global name reference to a local variable.

09-01-26 The [[ -v var ]] operator was modified to test for array elements.

09-01-23 The redirection operator <>; was added. It is similar to <>

except that if the command it is applied to succeeds, the file

is truncated to the offset at the command completion.

09-01-23 The default file descriptor for <> was changed to 1.

09-01-20 A bug in which the exit status specified in an exit trap was

not used when a process terminated with a signal has been fixed.

09-01-19 A bug in which a signal whose default action is to terminate

a process could be ignored when the process is running a sub-shell

has been fixed.

09-01-19 A bug in which sending SIGWINCH to a process that reads from a pipe

could cause a memory fault has been fixed.

09-01-16 The -R unary operator was added to [[...]] and test to check whether

a variable is a name reference.

09-01-16 The -v unary operator was added to [[...]] and test to check whether

a variable is set.

09-01-14 The unset built-in was modified to return 0 exit status when

unsetting a variable that was unset to conform with the POSIX

standard.

09-01-14 The unset built-in was modified to continue to unset variables

after encountering a variable that it could not unset to

conform to the POSIX standard.

09-01-14 The parameter expansion ${x+value} no longer expands the value of

the variable x when determining whether x is set or not.

09-01-13 A bug in which background jobs and pipelines that were not waited

for could, in rare instances, cause the shell to go into an infinite

loop or fail has been fixed.

09-01-06 A bug in indexed arrays of compound variables in which referencing

non-existent sub-variable in an arithmetic expression could cause

the sub-variable to be created has been fixed.

09-01-05 A bug in which the \ character did not escape extended regular

expression pattern characters has been fixed.

08-12-24 A bug in which killing the last element of a pipe did not cause

a write to the pipe to generate a SIGPIPE has been fixed.

08-12-19 A bug which could cause command substitution to hang when the

last element of a pipeline in a command substitution was a built-in

and the output was more that PIPE_BUFF.

08-12-18 A bug which occurs when a here documented marker embedded in a

command substitution occurs on a buffer boundary has been fixed.

08-12-17 A bug in the output of typeset -p for variables that had attributes

but did not have a value has been fixed.

08-12-16 A bug in which a name reference to a name reference variable that

references an array element has been fixed.

08-12-16 A bug in which a variable given both the -A and -C attribute along

with an initial assignment didn't work correctly has been fixed.

08-12-10 The [[ -t fd ]] test was fixed to handle fd>9.

08-12-10 A bug where function stack misalignment could cause a bus error

has been fixed.

08-12-09 Command completion was changed to use \ to quote special characters

instead of quoting the argument in single quotes.

08-12-07 A bug in typeset -m which occurred when the target node was an

associative array element has been fixed.

08-12-07 A timing bug on some systems (for example darwin), that could

cause the last process of a pipeline entered interactively to fail

with an "Exec format error" has been fixed.

08-12-04 SHOPT_BGX enables background job extensions. Noted by "J" in

the version string when enabled. (1) JOBMAX=n limits the number

of concurrent & jobs to n; the n+1 & job will block until a

running background job completes. (2) SIGCHLD traps are queued

so that each completing background job gets its own trap; $! is

set to the job pid and $? is set to the job exit status at the

beginning of the trap. (3) sleep -s added to sleep until the time

expires or until a signal is delivered.

08-12-04 The sign of floating point zero is preserved across arithmetic

function calls.

08-12-04 A bug that caused print(1) to produce garbled stdout/stderr

output has been fixed.

08-12-04 A bug in which printf "%d\n" "'<euro>'" did not output the

numerical value of the EURO symbol, 8354, has been fixed.

08-11-24 /dev/fd* and /dev/std* redirections are first attempted with

open() to preserve seek semantics; failing that the corresponding

file descriptors are dup()'d.

08-11-20 A bug which could cause a core dump if a function compiled with

shcomp was found has been fixed.

08-11-20 A bug in which jobs were not cleared from the jobs table for

interactive shells when the pipefail option is on has been fixed.

08-11-11 A bug in which a field that was unset in a type definition and later

set for an instance could appear twice when displaying the variable

has been fixed.

08-11-11 A bug in which running a simple command & inside a function would

not return the correct process id has been fixed.

08=11-10 A bug in which the exit status of a command could be lost if the pid

was that of the most recent command substitution that had completed

has been fixed.

08-11-10 The maximum depth for subshells has been increased from 256 to 65536.

08-11-06 A bug which could cause a core dump when the _ reference variable was

used as an embedded type with a compound assignment has been fixed.

08-10-31 --- Release ksh93t ---

08-10-31 Variable scoping/initialization bugs that could dump core were fixed.

08-10-24 The lexer now accepts all RE characters for patterns prefixed

with a ksh ~(...) option expression.

08-10-24 For ${var/pat/sub} \0 in sub expands to the text matched by pat.

08-10-18 A bug in array scoping that could dump core has been fixed.

08-10-10 read -n and -N fixed to count characters in multibyte locales.

08-10-10 A bug that mishandled _.array[] type references has been fixed.

08-10-09 ${.sh.version} now contains a concatenation of the following (after

'Version') denoting compile time features:

A SHOPT_AUDIT

B SHOPT_BASH

L SHOPT_ACCT

M SHOPT_MULTIBYTE

08-10-09 A bug that caused subshell command substitution with redirection

to hang has been fixed.

08-10-08 Output errors, other than to stderr, now result in a diagnostic.

08-10-08 ksh93 now supports types that contain arrays of other types as

members. Earlier versions core dumped in this case.

08-10-05 A bug which caused the shell to emit a syntax error for an arithmetic

statement of the form (( var.name[sub] = value)) has been fixed.

08-10-01 A bug that caused subshell command substitution to hang has

been fixed.

08-09-29 When the -p export option of typeset is used with other options,

only those variables matching the specified options are displayed.

08-09-29 When the shell reads the environment and finds variables that are

not valid shell assignments, it now passes these on to subsequent

commands rather than deleting them.

08-09-29 A bug in the display of compound variables containing an indexed

array of compound variables has been fixed.

08-09-29 A bug in the display of compound variables containing an associative

array with a subscript containing a . in the name has been fixed.

08-09-26 A core dump in the subshell environment restore has been fixed.

08-09-24 $(...) has been fixed to properly set the exit status in $?.

08-09-23 $(<...) with IFS=$'\n\n' has been fixed to retain all but the last

of multiple trailing newlines.

08-09-23 The -p option to typeset when used with other attributes, restricts

the output to variables with the specified attributes.

08-09-22 A bug that sometimes lost the exit status of a job has been fixed.

08-09-21 A bug that retained trailing command substitution newlines in

cases where the command caused the shell to fork has been fixed.

08-09-19 type, whence -v, and command -v were fixed to comply with POSIX

by writing 'not found' diagnostics to the standard error.

08-09-18 test and [...] were fixed to comply with POSIX in the case

of test '(' binop ')' where binop is a valid binary test operator.

08-09-16 If a method discipline named create is specified when defining a

type, this function will be called when an instance is created.

08-09-15 The variable _ is now set as a reference to the compound variable

when defining a compound variable or a type.

08-09-10 The shell now prints an error message when the type name specified

for an indexed array subscript is not an enumeration type.

08-09-10 A bug in which a subshell that spawned a background process could

loose output that was produced after the foreground completed

has been fixed.

08-09-10 A timing bug on some systems that could cause coprocesses started by a

subshell to not clean up and prevent other coprocesses has been fixed.

08-09-09 The typeset -m option is now able to rename array elements from

the same array.

08-09-09 The exit status of 2 from the DEBUG trap causes the next command

to be skipped. An exit value of 255 from a DEBUG trap called from

a function causes the function to return.

08-09-08 A bug in which a coprocess created in a subshell that did not

complete when the subshell terminated could prevent a coprocess

from being created in the parent shell has been fixed.

08-09-05 An assignment of the form name1=name2 where name1 and name2

are both compound variables causes name1 to get a copy of name2.

name1+=name2 causes name2 sub-variables to be appended to name1.

08-09-05 A bug in which unsetting a compound variable did not unset all

the sub-variables has been fixed.

08-09-01 A bug in the subshell cleanup code that could cause SIGSEGV has

been fixed.

06-08-26 The SHLVL variable which is an environment variable used by bash

and zsh that gets incremented when the shell starts.

08-08-25 For an indexed array, a negative subscript now refers to offsets

from the end so that -1 refers to the last element.

08-08-24 An alignment error for shorts on 64 bit architectures has been fixed.

08-08-22 If oldvar is a compound variable, typeset -C newvar=oldvar creates

newvar as a copy of oldvar.

08-08-19 The ALRM signal no longer cause the sleep builtin to terminate.

08-08-13 When used in an arithmetic expression, the .sh.version variable

now produces a number that will be increasing for each release.

08-08-11 A bug in which type instantiation with a compound assignment in

a dot script in which the type is defined has been fixed.

08-08-07 The -m option has been added to typeset to move or rename a

variable. Not documented yet.

08-08-06 A bug in read when used in a loop when a prompt was specified

when reading from a terminal has been fixed.

08-08-01 A bug with the pipefail option in which a nested pipeline could

cause an asynchronous command to block has been fixed.

08-08-01 A for loop optimizer bug that treats .sh.lineno as an invariant

has been fixed.

08-07-30 A bug in which expanding compound variable that had a get discipline

from with a here document could cause a syntax error has been fixed.

08-07-18 A bug in which a nameref caused a local variable to be created

rather than binding to an existing variable in the global scope

has been fixed.

08-07-17 A bug which occurred when a nameref was created from within a

function that was part of a pipeline has been fixed.

08-07-14 The compile option SHOPT_STATS was added. With this option the

compound variable .sh.stats keeps usage statistics that could help

with performance tuning.

08-07-10 The output of set now always uses a single line for each variable.

For array variables, the complete set of values is now displayed.

08-07-09 The typeset -C option can be used with arrays to indicate that

each element should default to a compound variable.

08-07-08 The %B format now outputs compound variables and arrays. The

alternate flag # can be used to cause output into a single line.

08-07-03 When the window change signal, WINCH, is received, the current

edit line is redrawn in place.

08-07-01 A bug in the handling of shared variables when inside an embedded

type has been fixed.

08-06-29 A bug in multiline edit mode which occurred when the prompt length

was three characters or less has been fixed.

08-06-23 A bug in which the SIGCLD was not be triggered when background

jobs completed has been fixed.

08-06-23 KSH_VERSION added as a name reference to .sh.version.

08-06-20 type now outputs 'special builtin' for special builtins.

08-06-19 A couple of bugs in multi-dimensional arrays have been fixed.

08-06-19 A bug in which a syntax error in a dot script could generated

a syntax error in the next subsequent command has been fixed.

08-06-17 Reduced the maximum function call depth to 2048 to avoid exceptions

on some architectures.

08-06-16 A bug in which printf "%B" could generate an exception when the

specified variable was not set has been fixed.

08-06-16 When typeset -p is followed by variable names, it now displays

the attributes names and values for the specific names.

08-06-14 A bug that could effect the drawing of the screen from multiline

emacs or gmacs mode when walking up the history file has been fixed.

08-06-13 A bug in which a compound variable defined in a subshell could

have side effects into the parent shell has been fixed.

08-06-13 A number of bugs related to using .sh.level to set the stack from

for DEBUG traps have been fixed.

08-06-13 The .sh.lineno variable has been added. When .sh.level is changed

inside a DEBUG trap, the .sh.lineno contains the calling line number

for the specified stack frame.

08-06-13 The .sh.level variable has been documented and now works.

08-06-11 The -C option has been added to read for reading compound command

definitions from a file.

08-06-11 The . command is now permitted inside a compound command definition.

The dot script can contain declaration commands and dot commands.

08-06-09 Add -C option to typeset so that typeset -C foo, is equivalent

to foo=().

08-06-09 Added -n warning message for typeset option orderings that are valid

with ksh88 but not valid with ksh93, for example Lx5.

08-06-09 A bug in which the return value for an assignment command containing

a command substitution with that failed was zero when the assignment

contained redirections has been fixed.

08-06-09 A bug in the quoting of $ inside a ERE pattern ~(E)(pattern)

has been fixed.

08-06-06 A bug when processing `` command substitution with the character

sequence \$' has been fixed.

08-06-02 When defining a type, the typeset -r attribute causes this field

to be required to be specified for each instance of the type and

does not allow a default value.

08-06-02 Several bugs in which compound variables were modified by

subshells have been fixed.

08-05-22 The ceil function has been added to the math functions.

08-05-21 A bug in which a name reference defined in a function and passed

as an argument to another function could cause an incorrect binding.

08-05-21 A bug in freeing compound variables that are local to functions

has been fixed.

08-05-19 The array expansions ${array[sub1..sub2]} and ${!array[sub1..sub2]}

to expand to the value (or subscripts) for array between sub1 and

sub2 inclusive. For associative arrays, the range is based on

location in the POSIX locale. The .. must be explicit and cannot

result from an expansion.

08-05-15 The trap on SIGCLD is no longer triggered by the completion of

the foreground job as with ksh88.

08-05-14 A bug in the implementation of the editing feature added on

07-09-19 in emacs mode has been fixed.

08-05-12 A bug in processing the test built-in with parenthesis has been

fixed.

08-05-12 The unset built-in now returns non-zero when deleting an array

subscript that is not set.

08-05-08 Changing the value of HISTFILE or HISTSIZE will cause the old

history file to be close and reopened with the new name or size.

08-05-08 When FPATH is changed functions that were found via a path search

will be searched for again.

08-05-08 A parser bug in which reserved words and labels were recognized

inside compound indexed array assignment after a new-line has

been fixed.

08-05-07 A bug in getopts when handling numerical option arguments has

been fixed.

08-05-07 The typeset -S option was added for variables outside type

definitions to provide a storage class similar to C static

inside a function defined with function name. When outside

type definitions and outside a function, the -S option cause

the specified variable so be unset before the assignment and

before the remaining attributes are supplied.

08-05-07 A bug that affected the cursor movement in multiline mode when

a character was deleted from near the beginning of the any

line other than the first.

08-05-01 In multiline edit mode, the refresh operation will now clear

the remaining portion of the last line.

08-05-01 A bug in computing prompt widths for the edit modes for prompts

with multibyte characters has been fixed.

08-05-01 A bug in the multiline edit mode which could cause the current

line to be displayed incorrectly when moving backwards from third

or higher line to the previous line has been fixed.

08-05-01 A bug in which options set in functions declared with the function

name syntax were carried across into functions invoked by these

functions has been fixed.

08-04-30 A bug which could cause a coprocess to hang when the read end

is a builtin command has been fixed.

08-04-30 The emacs and vi editors have been modified to handle window

change commands as soon as they happen rather than waiting for

the next command.

08-04-28 A bug in which ${!x} did not expand to x when x was unset has been

fixed.

08-04-27 A bug in which the assignment x=(typeset -a foo=([0]=abc)) created

x.foo as an associative array has been fixed.

08-04-25 A bug in which $# did not report correctly when there were more

than 32K positional parameters has been fixed.

08-04-04 Choose the name _ as the sub-variable that holds type or instance

specific data used by discipline functions.

08-03-27 A bug in which the terminal group was not given back to the parent

shell when the last part of a pipeline was handled by the parent shell

and the other parts of the pipeline complete has been fixed.

The symptom was that the pipeline became uninterruptable.

08-03-25 A bug in restricted mode introduced in ksh93s that caused scripts

that did not use #! to executed in restricted mode has been fixed.

08-03-25 A bug in which the pipefail option did not work for a pipeline

within a pipeline has been fixed.

08-03-24 A bug in which OPTIND was not set correctly in subshells has

been fixed.

08-03-24 A bug which could cause a memory exception when a compound variable

containing an indexed array with only element 0 defined was expanded.

08-03-20 A bug in which ${!var[sub].*} was treated as an error has been fixed.

08-03-20 Associative array assignments of the form ([name]=value ...)

now allow ; as well as space tab and new line to separate elements.

08-03-18 A buffering problem in which standard error was sometimes

not flushed before sleep has been fixed.

08-03-17 A bug in which a signal sent to $$ while in a subshell would be

sent to the subshell rather than the parent has been fixed.

08-03-17 --default option added to set(1) to handle set +o POSIX semantics.

set --state added as a long name alias for set +o.

08-03-14 A bug in which using monitor mode from within a script could

cause the terminal group to change has been fixed.

08-03-10 The new ${...} command substitution will treat the trailing }

as a reserved word even if it is not at the beginning of a command,

for example, ${ date }.

08-03-10 If the name of the ENV begins with /./ or ././ then the

/etc/ksh.kshrc file will not be executed on systems that support

this interactive initialization file.

08-03-07 A bug in which ksh -i did not run the ENV file has been fixed.

08-03-07 A bug in which ulimit did not always produce the same output as

ulimit -fS has been fixed.

08-03-04 A bug in multiline mode in emacs and vi mode which could cause the

cursor to be on the wrong line when interrupt was hit has been fixed.

08-03-03 The change made in ksh93s+ on 07-06-18 in which braces became

optional for ${a[i]} inside [[...]] was restored in the case

where the argument can be a pattern.

08-03-03 A bug in which creating a name reference to an associative array

instance would fail when the subscript contained characters [ or

] has been fixed.

08-02-29 The redirection operator >; has been added which for non-special

files, generates the output in a temporary file and writes the

specified file only of the command has completed successfully.

08-02-15 A bug in ${var/pattern/string} for patterns of the form ?(*) and +(*)

has bee fixed.

08-02-07 A bug in which test \( ! -e \) produced an error has been fixed.

08-02-14 The typeset -a option can now optionally be followed by the name

of an enumeration type which allows subscripts to be enumerations.

08-02-14 The enum builtin which creates enumeration types has been added.

08-02-12 The backoff logic when there are no more processes has been fixed.

08-02-07 The -X option has been added to typeset. The -X option creates

a double precision number that gets displayed using the C99 %a

format. It can be used along with -l for long double.

08-01-31 The -T option to typeset has been added for creating typed

variables. Also the -h and -S options have been added to

typeset that are only applicable when defining a type.

08-01-31 The prefix expansion operator @ has been added. ${@name}

expands to the type of name or yields the attributes.

07-11-15 A bug in the macro expander for multibyte characters in which

part of the character contains a file pattern byte has been fixed.

07-10-03 A bug in which : was not allowed as part of an alias name has been

fixed.

07-09-26 A bug in which appending a compound variable to a compound variable

or to an index array didn't work has been fixed.

07-09-19 In both emacs and vi edit mode, the escape sequence \E[A (usually

cursor up, when the cursor is at the end of the line will fetch

the most recent line starting with the current line.

07-09-18 The value of ${!var} was correct when var was a reference to an

array instance.

07-09-18 The value of ${!var[sub]} was not expanding to var[sub] and this

was fixed. It also fixed ${name} where name is a name reference

to var[sub].

07-09-18 It is now legal to create a name reference without an initialization.

It will be bound to a variable on the first assignment.

07-08-30 A discipline function can be invoked as ${x.foo} and is equivalent

to ${ x.foo;} and can be invoked as x.foo inside ((...)).

07-07-09 A bug in which typeset -a did not list indexed arrays has been

fixed.

07-07-03 The command substitution ${ command;} has been added. It behaves

like $(command) except that command is executed in the current

shell environment. The ${ must be followed by a blank or an

operator.

08-04-17 --- Release ksh93s+ ---

08-04-17 A bug in which umask was not being restored correctly after a

subshell has been fixed.

08-04-15 A bug in which sending a STOP signal to a job control shell started

from within a shell function caused cause the invoking shell to

terminate has been fixed.

08-04-11 A bug which caused $(exec > /dev/null) to go into an infinite loop

has been fixed.

08-03-27 A bug in which typeset -LZ was being treated as -RZ has been fixed.

08-03-06 A bug with ksh -P on systems that support the the profile shell,

in which it would exit after running a non-builtin has been fixed.

08-01-31 A bug in which command substitution inside ((...)) could cause

syntax errors or lead to core dumps has been fixed.

08-01-17 A bug in which discipline functions could be deleted when invoked

from a subshell has been fixed.

08-01-17 A bug in which a command substitution consisting only of

assignments was treated as a noop has been fixed.

08-01-17 A bug in which discipline functions invoked from withing a

compound assignment could fail has been fixed.

08-01-16 Incomplete arithmetic assignments, for example ((x += )), now

generate an error message.

08-01-16 A bug in which a set discipline defined for a variable before

an array assignment could cause a core dump has been fixed.

08-01-03 A bug in on some systems in which exit status 0 is incorrectly

returned by a process that catches the SIGCONT signal is stopped

and then continued.

07-12-13 A race condition in which a program that has been stopped and then

continued could loose the exit status has been fixed.

07-12-12 Code to check for file system out of space write errors for all

writes has been added.

07-12-11 A bug in the macro expander for multibyte characters in which

part of the character contains a file pattern byte has been fixed.

07-12-06 A bug in the emacs edit mode when multiline was set that output

a backspace before the newline to the screen has been fixed.

07-12-04 A bug in which using <n>TAB after a variable name listing expansion

in the edit modes would cause the $ to disappear has been fixed.

07-11-28 A bug in which setting IFS to readonly could cause a subsequent

command substitution to fail has been fixed.

07-11-27 A work around for a gcc 4.* C99 "feature" that could cause a job

control shell to go into an infinite loop by adding the volatile

attribute to some auto vars in functions that call setjmp().

07-11-27 A bug in which the shell could read ahead on a pipe causing the

standard input to be incorrectly positioned has been fixed.

07-11-27 A bug in which compound variable UTF-8 multibyte values were not

expanded or traced properly has been fixed.

07-11-21 A bug where an unbalanced '[' in a command argument was not treated

properly has been fixed.

07-11-15 A bug in which compatibility mode (no long option names) getopts(1)

incorrectly set the value of OPTARG for flag options has been fixed.

07-11-15 A bug in which "hash -- name" treated "--" as an invalid name operand

has been fixed.

07-11-15 typeset now handles "-t -- [-r] [--]" for s5r4 hash(1) compatibility.

07-11-15 A bug in which the umask builtin mis-handled symbolic mode operands

has been fixed.

07-11-15 Bugs in which shell arithmetic and the printf builtin mis-handled the

signs of { -NaN -Inf -0.0 } have been fixed.

07-11-15 The full { SIGRTMIN SIGRTMIN+1 ... SIGRTMAX-1 SIGRTMAX } range

of signals, determined at runtime, are now supported.

07-11-15 A bug in which creating an index array with only subscript 0 created

only a simple variable has been fixed.

07-11-14 A bug in which appending to an indexed array using the form

name+=([sub]=value) could cause the array to become an associative

array has been fixed.

07-11-14 A bug in which typeset without arguments could coredump if a

variable is declared as in indexed array and has no elements has

been fixed.

07-11-14 A bug in which creating a local SECONDS variable with typeset in

a function could corrupt memory has been fixed.

07-11-14 A bug which could cause a core dump when a script invoked by name

from a function used compound variables has been fixed.

07-11-05 A bug in which printf %d "'AB" did not diagnose unconverted characters

has been fixed.

07-11-05 printf %g "'A" support added for all floating point formats.

07-11-01 A bug in which typeset -f fun did not display the function definition

when invoked in a subshell has been fixed.

07-10-29 The sleep builtin was fixed so that all floating point constants

are valid operands.

07-10-10 A bug in which the locale was not being restored after

LANG=value command has been fixed.

07-09-20 A bug in which a nameref to a compound variable that was local

to the calling function would not expand correctly when displaying

is value has been fixed.

07-09-19 A bug which cause cause a core dump if .sh.edchar returned

80 characters or more from a keyboard trap has been fixed.

07-09-14 A bug in which could cause a core dump when more than 8 file

descriptors were in use has been fixed.

07-09-10 A bug in which creating a name reference to an instance of

an array when the array name is itself a reference has been fixed.

07-09-10 The file completion code has been modified so that after an = in

any word, each : will be considered a path delimiter.

07-09-06 A bug in which subprocess cleanup could corrupt the malloc() heap

has been fixed.

07-08-26 A bug in which a name reference to an associative array instance

could cause the subscript to be evaluated as an arithmetic expression

has been fixed.

07-08-22 A bug in which the value of an array instance was of a compound

variable was not expanded correctly has been fixed.

07-08-14 A bug which could cause a core dump when a compound assignment was

made to a compound variable element with a typeset -a attribute

has been fixed.

07-08-08 A bug in which a trap ignored in a subshell caused it to be

ignored by the parent has been fixed.

07-08-07 A bug in which the set command would generated erroneous output

for a variable with the -RZ attribute if the variable name had been

passed to a function has been fixed.

07-08-02 A bug in which read x[1] could core dump has been fixed.

07-08-02 A second bug in which after read x[sub] into an associative array

of an element that hasn't been assigned could lead to a core dump

has been fixed.

07-07-31 A bug in which a pipeline that completed correctly could have

an exit status of 127 when pipefail was enabled has been fixed.

07-07-09 The SHOPT_AUDIT compile option has been added for keyboard logging.

07-06-25 In vi insert mode, ksh no longer emits a backspace character

before the carriage return when the newline is entered.

07-06-25 A bug in which pipefail would cause a command to return 0

when the pipeline was the last command and the failure happened

on a component other than the last has been fixed.

07-06-25 A bug in the expansion of ${var/pattern/rep} when pattern or rep

contained a left parenthesis in single quotes has been fixed.

07-06-18 The braces for a subscripted variable with ${var[sub]} are now

optional when inside [[...]], ((...)) or as a subscript.

07-05-28 A bug in brace expansion in which single and double quotes did

not treat the comma as a literal character has been fixed.

07-05-24 The -p option of whence now disables -v.

07-05-23 Several bug fixes in compound variables and arrays of arrays

have been made.

07-05-15 A bug in which the %B format of printf was affected by the

locale has been fixed.

07-05-14 A bug in which \ was not removed in the replacement pattern with

${var/pattern/rep} when it was not followed by \ or a digit has

been fixed.

07-05-10 A bug in which ksh -R file core dumped if no script was specified

has been fixed. it not displays an error message.

07-05-07 Added additional Solaris signals to signal table.

07-04-30 A bug in which a pipeline with command substitution inside a

function could cause a pipeline that invokes this function to

hang when the pipefail option is on has been fixed.

07-04-30 Added -q to whence.

07-04-18 A small memory leak with each redirection of a non-builtin has

been fixed.

07-03-08 A bug in which set +o output command line options has been fixed.

07-03-08 A bug in which an error in read (for example, an invalid variable

name), could leave the terminal in raw mode has been fixed.

07-03-06 A bug in which read could core dump when specified with an array

variable with a subscript that is an arithmetic expression has

been fixed.

07-03-06 Several serious bugs with the restricted shell were reported and

fixed.

07-03-02 If a job is stopped, and subsequently restarted with a CONT

signal and exits normally, ksh93 was incorrectly exiting with

the exit status of the stop signal number.

07-02-26 M-^L added to emacs mode to clear the screen.

07-02-26 A bug in which setting a variable readonly in a subshell would

cause an unset error when the subshell completed has been fixed.

07-02-19 The format with printf uses the new = flag to center the output.

07-02-19 A bug in which ksh93 did not allow multibyte characters in

identifier names has been fixed.

07-02-19 A bug introduced in ksh93 that causes global compound variable

definitions inside functions to exit with "no parent" has been fixed.

07-02-19 A bug in which using compound commands in process redirection

arguments would give syntax errors <(...) and >(...) has been fixed.

07-01-29 A bug which caused the shell to core dump which can occur when a

built-in exits without closing files that it opens has been fixed.

07-01-26 A bug in which ~(E) in patterns containing \ that are not inside ()

has been fixed.

06-12-29 --- Release ksh93s ---

06-12-29 A bug in which the value of IFS could be changed after a command

substitution has been fixed.

06-12-22 /dev/(tcp|udp|sctp)/HOST/SEVRICE now handles IPv6 addresses on

systems that provide getaddrinfo(3).

06-12-19 A -v option was added to read. With this option the value of

the first variable name argument will become the default value

when read from a terminal device.

06-11-20 A bug in which "${foo[@]:1}}" expands a null argument (instead of

no argument), when foo[0] is not empty has been fixed.

06-11-16 The discipline functions have been modified to allow each subscript

to act independently. Currently the discipline function will not

be called when called from a discipline function of the same variable.

06-11-14 A bug which could cause a core dump if a file descriptor for

an internal file was closed from with a subshell has been fixed.

06-10-30 The redirections <# pattern, and <## pattern have been added.

Both seek forward to the beginning of the next line that contains

the pattern. The <## form copies the skipped portion to standard

output.

06-10-26 On systems that support stream control transport, the virtual file

name /dev/sctp/host/port can now be used to establish connections.

06-10-26 The printf modifier # when used with d produces units in thousands

with a single letter suffix added. The modifier # when used with

the i specification provides units of 1024 with a two letter suffix.

06-10-24 The value of $! is now set to the process id of a job put

into the background with the bg command as required by POSIX.

06-10-23 A bug in which the value of $! was affected by a background

job started from a subshell has been fixed.

06-10-23 A bug in ${var:offset:len} in multibyte locales has been fixed.

06-10-15 The remaining math functions from C99 were added for any system

that supports them.

06-10-13 The klockwork.com software detected a few coding errors that

have been fixed.

06-10-12 A bug when skipping over `...` with ${x:=`...`} when x is set

has been fixed.

06-10-11 A bug in process floating constants produced by the %a format

of printf has been fixed.

06-10-06 A bug in which IFS was not being restored correctly in some

cases after a subshell has been fixed.

06-10-06 A bug in which pipefail was not detecting some failures in

pipelines with 3 or more states has been fixed.

06-10-03 A bug in the processing of >(...) with builtins which could

cause the builtin to hang has been fixed.

06-10-03 A bug in the for loop optimizer which causes >(...) process

substitution to be ignored has been fixed.

06-09-17 The -a option was added to typeset for indexed arrays. This

is only needed when using the ([subscript]=value ...) form.

06-09-06 The showme option was added. Each simple command not beginning

with a redirection and not occurring with in the while, until, if,

select condition can be preceded by a semi-colon which will

be ignored when showme is off. When showme is on, any command

preceded by a colon will be traced but not executed.

06-08-16 As a new feature, a leading ~(N) on a pattern has no effect

except when used for file expansion. In this case if not

matches are found, the pattern is replaced by nothing rather

than itself.

06-08-11 A bug in the expansion of ${.sh.match[i]:${#.shmatch[i]}} has

been fixed.

06-08-10 The read builtin options -n and -N have been modified to treat

the size as characters rather than bytes unless storing into a

binary (typeset -B) variable.

06-07-27 When the here document operator << is followed directly by a #

rather than a -, the first line of the here-document determines

how much whitespace is removed for each line.

06-07-26 A bug in the C-shell history (enabled with set -H) in which the

history event !$ was not processed has been fixed.

06-07-21 A bug on some systems in which assigning PATH on a command line

would not take effect has been fixed.

06-07-20 Add ksh93 and rksh93 as allowable names for ksh binaries.

06-07-20 Removed the SHOPT_OO compilation option which was only partially

implemented.

06-07-20 The ability to use egrep, grep, and fgrep expressions within

shell patterns has been documented.

06-07-17 A bug with arithmetic command expressions for locales in which

the comma is a thousands separator has been fixed.

06-07-13 The default HISTSIZE was increased from 128 to 512.

06-07-13 A multibyte problem with locales that use shift codes has been fixed.

06-06-23 A number of bug fixes for command, file, and variable completion

have been mode.

06-06-20 Floating point division by zero now yields the constant Inf or -Inf

and floating functions with invalid arguments yield NaN.

06-06-20 The floating point constants Inf and NaN can be used in arithmetic

expressions.

06-06-20 The functions isinf(), isnan(), tanhl() have been added for

arithmetic expressions.

06-06-13 Internal change to use ordering for variables instead of hashing

to speed up prefix matching.

06-06-13 A window between fork/exec in which a signal could get lost

and cause a program to hang has been eliminated

06-06-13 A bug in edit completion with quoted strings has been fixed.

06-06-07 The restricted options can now be enabled by set as well as on

the command line. Once set, it can not be disabled.

06-06-04 Modified built-in binding so that for systems for which /bin

and /usr/bin are the same, a builtin bound to /bin will get

selected when either /bin or /usr/bin is scanned.

06-06-04 Added literal-next character processing for emacs/gmacs mode.

This change is not compatible with earlier versions of ksh93

and ksh88 when the stty lnext is control-v. The sequence

escape-control-v will display the shell version.

06-05-31 Modified emacs and vi mode so that entering a TAB after a partial

TAB completion, generates a listing of possible completions.

After the second TAB, a number followed by a TAB will perform

the completion with the corresponding item.

06-05-19 Modified arithmetic so that conversions to strings default to

the maximum number of precision digits.

06-05-16 Bug fixes for multibyte locales.

06-05-10 The =~ operator was added to [[...]] and [[ string ~= ERE ]]

is equivalent to [[ string == ~(E)ERE ]].

06-04-25 A bug in the vi edit mode which could cause the shell to core dump

when switching from emacs mode.

06-04-17 A bug in which using LANG or LC_ in assignment lists with builtins

did not restore the localed correctly has been fixed.

06-04-04 A bug in which discipline functions could not be added to variables

whose names started with .sh has been fixed.

06-03-28 The -s option to typeset was added to modify -i to indicate short

integers.

06-03-28 A bug in which variables assignment lists before functions

defined with function name were not passed on the functions

invoked by this function has been fixed.

06-03-28 A bug in which name references defined within a function defined

with function name could not be used with compound variables has

been fixed.

06-03-27 A bug in which read <&p (print >&p) would cause the coprocess input

(output) pipe to close before reading from (after writing to)

it has been fixed.

06-02-28 A bug in which stopping a job created with the hist builtin command

would create a job that could not be restarted has been fixed.

06-01-24 --- Release ksh93r ---

06-01-24 A bug in which running commands with standard output closed would

not work as expected has been fixed.

06-01-23 A bug in which print -u<n> could fail when file descriptor <n> was

open for writing has been fixed.

06-01-19 The ?: arithmetic operator fixed to work when the operation after

the colon was an assignment.

05-12-24 A bug which could lead to a core dump when elements of a compound

variable were array elements, i.e. foo=(bar=(1 2)), has been fixed.

05-12-13 An arithmetic bug in which x+=y+=z was not working has been fixed.

05-12-13 An arithmetic bug in which x||y was returning x when x was non-zero

rather than 1 has been fixed.

05-12-07 The aliases for integer and float have been changed to use attributes

-li and -lE to handle long long and long double types.

05-12-07 The histexpand (-H) option has been added which allows C-shell

style history expansions using the history character !.

05-12-07 The multiline option was added which changes that way the edit

modes handle lines longer than the window width. Instead of

horizontal scrolling, multiple lines on the screen are used.

05-12-05 The whence builtin now returns an absolute pathname when the

command is found in the current directory.

05-11-29 A bug which caused ksh -c '[[ ! ((' to core dump rather than

report a syntax error has been fixed.

05-11-29 A bug when reading fixed length records into typeset -b variables

which caused a zero byte to terminate the value has been fixed.

05-11-22 The ability to seek to an offset within a file has been added

with the new I/O redirection operators, <# and >#. Currently,

these redirection operators must be followed by ((expr))

but in a future release, it should be able to used to seek forward

to the specified shell pattern. In addition $(n<#) expands to the

current byte offset for file descriptor n.

05-11-22 The .sh.match array variable is now set after each [[ ... ]]

pattern match. Previously it was only set for substring matches.

05-10-17 A bug in which the library path variable could be prefixed

with a directory when a .path file was not encountered in

the directory of the executable has been fixed.

05-09-15 A for/while loop optimizer bug in which $OPTIND was not

correctly expanded has been fixed.

05-09-05 A bug in which a history command that invoked a history

command could go into an infinite loop has been fixed.

05-08-31 In the case that IFS contains to adjacent new-lines so that

new-line is not treated as a space delimiter, only a single

new-line is deleted at the end of a command substitution.

05-08-19 When a tilde substitution expands to the / directory and is

followed by a /, it is replaced by the empty string.

05-08-16 A bug in which n<&m did not synchronize m has been fixed.

05-08-16 A bug in which process substitution ( <() and >() ) was not

working within for and while loops has been fixed.

05-07-24 A bug in which the pattern ~(E)(foo|bar) was treated as a syntax

error has been fixed.

05-07-24 A bug in completion with <n>=, where n was the one of the

previous selection choices has been fixed.

05-07-21 A bug with multibyte input when no edit mode was specified which

caused the input line to shift left/right has been fixed.

05-06-24 A race condition which could cause the exit status to get lost

on some fast systems has been fixed.

05-06-21 A bug in which nested patterns of the form {m,n}(pat) would cause

syntax errors has been fixed.

05-06-21 A bug in the macro expander has been fixed which could cause a

syntax error for an expansion of the form ${x-$(...)} when

x is set and the command substitution contained certain strings.

05-06-08 On systems for which echo does not do System V style \ expansions,

the -e option was added to enable these expansion.

05-06-08 A bug in which ${var op pattern} to not work when inside an

arithmetic expression has been fixed.

05-05-23 An extension to shell patterns that allows matching of nested

groups while skipping over quoted strings has been added.

05-05-18 A bug in which the line number for errors was not correct for

functions loaded from FPATH has been fixed.

05-04-18 A bug in which the exit status $? is not set when a trap triggered

by the [[...]] command is executed has been fixed.

05-04-08 Redirection operators can be directly preceded with {varname}

with no intervening space, where varname is a variable name which

allows the shell to select a file descriptor > 10 and store it

into varname.

05-04-08 SHOPT_CMDLIB_BLTIN=1 now includes <cmdlist.h> generated table.

05-04-07 [[ -o ?option ]] is true if "option" is a supported option.

05-04-05 A bug in handling file completion with spaces in the names

has been fixed.

05-03-25 The SIGWINCH signal is caught by default to keeps the LINES and

COLUMNS variables in sync with the actual window size.

05-03-25 Building ksh with SHOPT_REMOTE=1 causes ksh to set --rc if stdin is

a socket (presumably part of a remote shell invocation.)

05-03-25 Building ksh with SHOPT_SYSRC=1 causes interactive ksh to source

/etc/ksh.kshrc (if it exists) before sourcing the $ENV file.

05-03-25 {first..last[..incr][%fmt]} sequences added to brace expansions

when braceexpand is enabled.

05-03-03 A bug where a SIGCHLD interrupt could cause a fifo open to fail has

been fixed.

05-02-25 A bug in which a builtin command run in the background could

keep a file descriptor open which could cause a foreground

process to hang has been fixed.

05-02-24 A bug where builtin library commands (e.g., date and TZ) failed to

detect environment variable changes has been fixed.

05-02-22 The read builtin and word splitting are now consistent with respect

to IFS -- both treat IFS as field delimiters.

05-02-22 The read builtin no longer strips off trailing delimiters that

are not space characters when there are fewer variables than fields.

05-02-17 A builtin bug on systems where dlsym(libcmd) returns link-time

bindings has been fixed.

05-02-12 A bug in which the lib_init() function for .paths BUILTIN_LIB

libraries was not called has been fixed.

05-02-06 A bug on some systems in which moving the write end of a co-process

to a numbered file descriptor could cause it to close has been fixed.

05-02-06 A bug in the vi-edit mode in which the character under the cursor

was not deleted in some cases with the d% directive has been fixed.

05-02-06 A bug where external builtin stdout/stderr redirection corrupted

stdout has been fixed.

05-02-04 A bug where times formatting assumed CLK_TCK==60 has been fixed.

05-01-11 --- Release ksh93q ---

05-01-11 A bug in the integral divide by zero check has been fixed.

05-01-11 The -l option has been added to read /etc/profile and

$HOME/.profile, if they exist, before the first command.

05-01-11 An argument parsing bug that caused `kill -s x -- n' to fail has

been fixed.

05-01-11 The .paths file, introduced in ksh93m, which can appear in

any directory in PATH, now allows a line of the form 'BUILTIN_LIB=.'

When a command is searched for this directory, and the full path

matches the path of the built-in version of the command (listed

by the 'builtin' command) then the built-in version of the command

is used. When ksh is built with SHOPT_CMDLIB_DIR=1 then all libcmd

functions become builtins with the '/opt/ast/bin/' directory prefix.

05-01-10 A bug in which a nameref to a compound name caused a core dump has

been fixed.

05-01-09 A bug in which some SIGCHLD interrupts (from child processes exiting)

caused a fatal print/echo error diagnostic has been fixed.

04-12-24 A bug in which some SIGCHLD interrupts (from child processes exiting)

corrupted the internal process/job list, sometimes causing the shell

to hang, has been fixed.

04-12-01 A bug in which typeset -Fn truncated less than n digits for large

numbers has been fixed.

04-11-25 A bug in which standard error could be closed after a redirection

to /dev/stderr has been fixed.

04-11-17 A bug in which an expansion of the form ${array[@]:3} could expand

to ${array[0]} when ${array[3]} was not set has been fixed.

04-10-22 The -E or -orc command line option reads ${ENV-$HOME/.kshrc} file.

04-10-22 `-o foo' equivalent to `+o nofoo', `-o nobar' equivalent to `+o bar'.

`--foo' equivalent to `-o foo', `--nofoo' equivalent to `+o foo'

04-10-05 The .paths file, introduced in ksh93m, which can appear in

any directory in PATH, now allows a line of the form

'BUILTIN_LIB=libname'. When a command is searched for this directory,

the shared library named by libname will first be searched for a

built-in version of the command.

04-09-03 <<< here documents now handle quotes in the word token correctly.

04-08-08 The maximum size for read -n and and read -N was increased from

4095 to 32M.

04-08-04 printf %q was modified so that if an no operand was supplied, no

no output would be generated rather than a quoted empty string.

04-08-01 The -n and -N options of the read builtin has been modified

when reading variables with the binary attribute so that the

data is stored directly rather than through assignment.

04-08-01 The shcomp command has been modified to process alias commands

under some conditions.

04-07-31 The .sh.match variable added in ksh93l, now works like other

indexed arrays.

04-07-08 A loop optimizer bug which occurs when typeset is used in

a for or while loop inside a function has been fixed.

04-06-24 The number of subexpressions in a pattern was increased to 64

from the current number of 20.

04-06-17 The -t option to read was modified to allow seconds to be

specified as any arithmetic expression rather than just

an integral number of seconds, for example even -t 'sin(.5)'

is now valid.

04-06-16 Two small memory leak problems were fixed.

04-06-15 A bug in ${var/pattern/"string"} which occurred when string

contained pattern matching characters has been fixed.

04-05-08 printf $'%d\n' produced an erroneous error message and has

been fixed.

04-05-24 A bug in which an associative array without any elements could

cause a core dump when a script with an associative array with

the same name was declared in a script invoked by name has

been fixed.

04-05-11 A bug in which an exec statement could close the script that

is being processed in a script that is run by name causing

a failure has been fixed.

04-04-28 If the first character of assignment to an integer variable was 0,

the variable had been treated as unsigned. This behavior was

undocumented and has been removed.

04-04-05 A bug in which the positioning of standard input could be incorrect

after reading from standard input from a subshell has been fixed.

04-03-30 A bug in the for loop optimizer which in rare cases could cause

memory corruption has been fixed.

04-03-29 The preset alias source='command .' has been added.

04-03-29 A bug introduced in ksh93p on some systems in which invoked by

name with #! on the first line would not get the signals handling

initialized correctly has been fixed.

04-03-29 A bug introduced in ksh93p in which a HUP signal received by

a shell that is a session group leader was not passed down to

its children has been fixed.

04-02-28 --- Release ksh93p ---

04-02-28 The ability to apply an append discipline to any variable has

been added.

04-02-14 A bug in which the exportall option (set -a) would cause incorrect

results for arrays has been fixed.

04-02-02 A bug in which an exported array would pass more than

the first element to a script invoked by name has been fixed.

04-02-02 A bug on some systems in which name=value pairs preceding a script

invoked by name was not getting passed to the script has been fixed.

04-01-20 A bug in which an unset discipline function could cause a core

dump on some systems has been fixed.

04-01-12 A bug in which a continue or break called outside a loop from

inside a function defined with name() syntax could affect

the invoking function has been fixed.

04-01-08 If a command name begins with ~, only filename completion will be

attempted rather than pathname completion using the builtin editors.

04-01-08 A bug in the vi edit mode in which the wrong repeat count on

multiple word replacements with the . directive has been fixed.

04-01-06 Backspace characters are now handled correctly in prompt strings.

04-01-06 The getopts builtin has been modified to accept numerical

arguments of size long long on systems that support this.

04-01-06 A bug in which unsetting all elements of an associative array

would cause it to be treated as an indexed array has been fixed.

03-12-15 A bug in which a quoted string ending with an unescaped $ would

delete the ending $ in certain cases has been fixed.

03-12-05 A bug in which the shell could hang when set -x tracing a command

when an invalid multibyte character is encountered has been fixed.

03-12-05 On some systems, if the KEYBD trap is set, then commands that use

the meta key were not processed until return was hit. This

has been fixed.

03-12-05 A problem which occurred when the login shell was not a group

leader that could cause it to fail has been fixed.

03-12-05 A problem in which a shell could core dump after receiving a signal

that should cause it to terminate while it was in the process

of acquiring more space has been fixed.

03-12-05 If ENV is not specified, the shell will default to $HOME/.kshrc

for interactive shells.

03-11-21 A bug introduced in ksh93o in which the DEBUG trap could get

disabled after it triggered has been fixed.

03-11-04 A bug in which using arithmetic prefix operators ++ or -- on a

non-lvalue could cause a core dump has been fixed.

03-11-04 A bug in which leading zeros were stripped from variable

expansions within arithmetic computation to avoid being treated

as octal constants when they should not have, has been fixed.

03-10-08 A bug introduced in ksh93o in which a large here document inside

a function definition could get corrupted has been fixed.

03-09-22 A bug in which the .get discipline function was not being

called when a string variable was implicitly referenced from

within a numerical expression has been fixed.

03-09-22 A bug in which a script without a leading #! could get executed

by /bin/sh rather than the current shell on some systems has

been fixed.

03-09-12 To improve conformance with ksh88, leading zeros will be ignored

when getting the numerical value of a string variable so that

they will not be treated as octal constants.

03-09-03 The builtin kill command now processes obsolete invocations

such as kill -1 -pid.

03-09-02 The restriction on modifying FPATH in a restricted shell (sh -r)

has been documented.

03-09-02 The restricted shell (sh -r) has been modified to disallow

executing command -p.

03-08-07 A bug in which the KEYBD trap was not being invoked when

characters with the 8th bit set has been fixed.

03-08-02 A parser bug introduced in ksh93o which caused the character

after () in a Posix function definition to be skipped

when reading from standard input has been fixed.

03-08-01 A bug in which "${foo#pattern}(x)" treated (x) as if it were

part of the pattern has been fixed.

03-08-01 The command -x option has been modified so that any trailing

arguments that do expand to a single word will be included

on each invocation, so that commands like command -x mv * dir

work as expected.

03-07-20 --- Release ksh93o+ ---

03-07-20 A bug in which could cause memory corruption when a posix

function invoked another one has been fixed.

03-07-15 A bug in which a file descriptor>2 could be closed before

executing a script has been fixed.

03-07-15 A parsing error for <() and >() process substitutions inside

command substitution has been fixed.

03-07-15 A parsing error for patterns of the form {...}(...) when

used inside ${...} has been fixed.

03-07-15 An error in which expanding an indexed array inside a compound

variable could cause a core dump has been fixed.

03-07-15 A bug in which on rare occasions a job completion interrupt

could cause to core dump has been fixed.

03-06-26 A bug in which process substitution embedded within command

substitution would generate a syntax error has been fixed.

03-96-23 A bug in which ${@:offset:len} could core dump when there

were no arguments has been fixed.

03-96-23 A bug in which ${X[@]:offset:len} could core dump when X

was unset has been fixed.

03-06-22 The -x option was added to the command builtin. If this

option is on, and the number of arguments would exceed ARG_MAX,

the command will be invoked multiple times with a subset of

the arguments. For example, with alias grep='command -x grep,

any number of arguments can be specified.

03-06-14 A bug in which could cause a core dump on some systems with

vi and emacs editors with the MULTIBYTE option has been fixed.

03-06-06 A bug in which the shell could core dump when a script was

run from its directory, and the script name a symlink to a file

beginning with .., has been fixed.

03-06-05 A bug in which the shell could core dump when a child process

that it is unaware of terminates while it is calling malloc()

has been fixed.

03-06-02 An option named globstar (set -G) has been added. When enabled,

during pathname expansion, any component that consists only of ** is

matches all files and any number of directory levels.

03-05-30 A bug in which the PATH search could give incorrect results when

run from directory foo and PATH contained .:foo:xxx has been fixed.

03-05-29 Some changes were made to the code that displays the prompt in edit

mode to better handle escape sequences in the prompt.

03-05-27 I added = to the list of characters that mark the beginning of

a word for edit completion so that filenames in assignments

can be completed.

03-05-20 A bug in which read -N could hang on some systems when reading

from a terminal or a pipe has been fixed.

03-05-19 A bug in which the output of uname from a command substitution

would go to the standard output of the invoking command when

uname was invoked with a non-standard option has been fixed.

03-05-19 A job control bug which would cause the shell to exit because

it hadn't take back the terminal has been fixed. The bug

could occur when running a function that contained a pipeline

whose last element was a function.

03-05-19 A job control timing bug introduced in ksh93o on some systems

which could cause a pipeline to hang if the first component

completed quickly has been fixed.

03-05-13 The read builtin has been modified so that the builtin editors

will not overwrite output from a previous incomplete line.

03-05-13 A bug in which the name of an identifier could have the string

.sh. prefixed to it after expanding a variable whose name begins

with .sh. has been fixed.

03-05-13 A bug in the expansion of $var for compound variables in which

some elements would not be output when the name was a prefix

of another name in the compound variable has been fixed.

03-05-08 The last item in the ksh93o release on 03-01-02 has been

altered slightly to preserve the leading 0's when the

preceding character is a digit. Thus, with typeset -LZ3 x=10,

$(( 1$x)) will be 1010 whereas $(( $x) will be 10.

03-04-25 A bug in which if x is a name reference, then nameref y=x.foo

did not follow x has been fixed.

03-03-18 --- Release ksh93o ---

03-03-18 A -N unary operator was added to test and [[...]] which returns

true if the file exists and the file has been modified since it

was last read.

03-03-18 The TIMEFORMAT variable was added to control the format for

the time compound command. The formatting description is

described in the man page.

03-03-06 A -N n option was added to read which causes exactly n bytes

to be read unlike -n n which causes at most n bytes to be read.

03-03-03 Three new shell variables were added. The variable .sh.file

stores the full pathname of the file that the current command

was found in. The variable .sh.fun names the current function

that is running. The variable .sh.subshell contains the depth

of the current subshell or command substitution.

03-03-03 When the DEBUG trap is executed, the current command line after

expansions is placed in the variable .sh.command. The trap

is also now triggered before each iteration of a for, select,

and case command and before each assignment and redirection.

03-02-28 Function definitions are no longer stored in the history file so

that set -o nolog no longer has any meaning.

03-02-28 All function definitions can be displayed with typeset -f not

just those stored in the history file. In addition, typeset +f

displays the function name followed by a comment containing the

line number and the path name for the file that defined this function.

03-02-28 A bug in which the value of $LINENO was not correct when executing

command contained inside mult-line command substitutions has been

fixed.

03-02-19 Since some existing ksh88 scripts use the undocumented and

unintended ability to insert a : in front of the % and # parameter

expansion operators, ksh93 was modified to accept :% as equivalent

to % and :# as equivalent to # with ${name op word}.

03-02-14 A bug which could cause a core dump when reading from standard

error when standard error was a pty has been fixed.

03-02-14 The shell arithmetic was modified to use long double on systems

that provide this data type.

03-02-09 A bug in which a function located in the first directory in FPATH

would not be found when the last component of PATH was . and the

current directory was one of the directories in PATH has been fixed.

03-02-07 The trap and kill builtin commands now accept a leading SIG prefix

on the signal names as documented.

03-02-05 A bug in the expansion of ${var/$pattern}, when pattern contained

\[ has been fixed.

03-02-05 A bug in which .sh.match[n], n>0, was not being set for substring

matches with % and %% has been fixed.

03-01-15 A bug in which getopts did not work for numerical arguments specified

as n#var in the getopts string has been fixed.

03-01-09 A bug in which using ${.sh.match} multiple times could lead to

a memory exception has been fixed.

03-01-06 A bug in the expansion of ${var/pattern/$string} in the case that

$string contains \digit has been fixed.

03-01-02 A -P option was added for systems such as Solaris 8 that support

profile shell.

03-01-02 For backward compatibility with ksh88, arithmetic expansion

with ((...)) and let has been modified so that if x is a zero-filled

variable, $x will not be treated as an octal constant.

02-12-05 --- Release ksh93n+ ---

02-11-30 A bug that can show up in evaluating arithmetic statements that

are in an autoloaded function when the function is autoload from

another function has been fixed.

02-11-30 An optimization bug in which an expansion of the form ${!name.@},

which occurred inside a for or a while loop, when name is a name

reference, has been fixed.

02-11-18 A bug in which modifying array variables in a subshell could leave

side effects in the parent shell environment has been fixed.

02-11-18 A memory leak when unsetting an associative array has been fixed.

02-11-14 The code to display compound objects was rewritten to make

it easier for runtime extensions to reuse this code.

02-11-14 A change was made to allow runtime builtins to be notified when

a signal is received so that cleanup can be performed.

02-10-31 User applications can now trap the ALRM signal. Previously,

the ALRM signal was used internally and could not be used

by applications.

02-10-31 A bug in which signals received while reading from a coprocess

for which traps were set was not handled correctly has been fixed.

02-10-31 A bug in which a file opened with exec inside a subshell could

be closed before the subshell completed has been fixed.

02-10-21 A bug in which setting PATH or FPATH inside a function might not

take effect has been fixed.

02-10-21 A bug which could cause a core dump when a local SECONDS variable

is defined in a function has been fixed.

02-10-15 A bug in which the associate array name operator ${!array[@]}

could return the same name multiple times has been fixed.

02-10-15 A bug in which the zero'th element of an associative array was

not getting set when an assignment was made without a subscript

specified has been fixed.

02-09-30 --- Release ksh93n ---

02-09-30 The maximum indexed array size was increased to 16Megs.

02-09-30 A bug which could cause a core dump when changing attributes

of associative array has been fixed.

02-09-30 A bug in which exporting an array variable would not export the

0-th element has been fixed.

02-09-30 A bug in which an array assignment of the form a=($a ...) would unset

'a' before the right hand side was evaluated has been fixed.

02-09-27 A bug in which the error message for ${var?message} when var was

null or unset did not contain the variable name var has been fixed.

02-09-27 A bug in which closing file descriptors 0 through 2 could

cause a subsequent here document to fail has been fixed.

02-09-14 A bug in whence which occurs when the specified name contained

a / has been fixed.

02-09-14 A bug in the parser for strings of the form name$((expr))=value

has been fixed.

02-09-14 A for loop optimization bug in which the number of elements in

an array was treated as an invariant has been fixed.

02-09-09 A bug in which redirection or closing of a file descriptor between

3 and 9 could cause a subsequent here document to fail has been

fixed.

02-09-09 A bug in which a background job was not removed from the job list

when a subshell completed has been fixed, for example (prog&).

02-09-03 A bug in which an assignment of the form name=(integer x=3)

could be interpretted as an array assignment rather than a

compound variable assignment has been fixed.

02-08-19 A command completion bug which occurred on file systems that

are case insensitive has been fixed.

02-08-19 A bug which could lead to an exception on some systems (for

example FREEBSD) which occurred when setting PATH has been fixed.

02-08-11 A bug in arithmetic rounding in which a value input as a decimal

string would output as a rounded version of the string has

been fixed.

02-08-11 A bug in which the last character could be deleted from shell

traces and from whence when called from a multibyte locale

has been fixed.

02-08-01 A bug which could cause a core dump to occur when a shell script

is executed while a coprocess is running that has closed the

output pipe has been fixed.

02-08-01 A bug in which command completion in multibyte mode could

corrupt memory for long command lines has been fixed.

02-06-17 --- Release ksh93n- ---

02-06-17 A bug in which user defined macros could cause a core dump in

with MULTIBYTE mode has been fixed.

02-06-17 A bug in which printf format specifiers of the form %2$s were causing

a core dump has been fixed.

02-06-17 A bug in which setting stty to noecho mode did not prevent the

echoing of characters by ksh when emacs or viraw mode

was enabled has been fixed.

02-06-17 A bug in which background job completion could cause the sleep

builtin to terminate prematurely has been fixed.

02-06-17 A bug in which the shell could core dump if getopts was called

when the OPTIND variable contained a negative value has been fixed.

02-06-10 The edit mode prompt has been modified to handle escape sequences.

02-06-10 A bug which occurred for interactive shells in which the builtin

cat command was used in command substitution on a file whose

size was larger than PIPE_BUF has been fixed.

02-06-10 A bug in which the trap on ERR was not being processed when

set inside a function has been fixed.

02-06-07 A bug in which function definitions could cause the history count

to be decremented by one (and even become negative) has been fixed.

02-06-05 A bug in read in which share mode could be enabled has been fixed.

02-05-28 A bug which could occur when the last command of a script was

a case statement and the action selected ended in ;& instead of ;;

has been fixed.

02-05-23 A bug with unary + introduced in ksh93k has been fixed.

02-05-07 A bug in substitutions of the form ${var/pattern/string} in which

a backslash was inserted in the replacement string when it contained

a special pattern character has been fixed.

02-05-01 A bug in the emacs edit mode which occurred in versions compiled

for multibyte character sets which occurred when a repeated search

was requested after a long line had been returned for the previous

search has been fixed.

02-04-02 vi and emacs edit modes were modified so that tab completion is

disabled when invoked from the read built-in.

02-03-26 --- Release ksh93m+ ---

02-03-26 A bug in which \ was not handled correctly when used in file

expansion has been fixed.

02-02-18 A bug in which lines beginning with a # were deleted from here

documents when the here-document delimiter was followed by

a comment has been fixed.

02-12-06 An optimization bug in which ${!x[@]) was treated as invariant in

a for loop has been fixed.

02-02-06 A bug in which the ERR trap is not cleared for a script invoked

by name from within a function has been fixed.

02-01-08 A bug in which a shell script executed from within a subshell

could cause this script to have an invalid pointer leading

to a memory fault has been fixed.

02-01-07 Added here documents of the form <<< word (as per zsh) which

is equivalent to << delim\nword\ndelim.

02-01-07 A bug in which the first word of a compound assignment,

x=(word ...), was treated as a reserved word has been fixed.

02-01-07 A bug in the handling of \ when noglob was enabled and a

substitution of the form ${word op pattern} occurred in the

same word has been fixed.

02-01-07 A compilation option, CMDLIB_BLTIN in the file OPTION, has

been added. When this options is set, all commands implemented

in libcmd become shell builtin commands by default.

02-01-07 A bug in which builtin foo, where foo is already a builtin

would result in the builtin foo getting removed has been fixed.

02-01-07 A bug which the shell executed a command found in the current

directory when PATH have no valid directories has been fixed.

01-11-28 The value of $? was not being set when called with exit.

01-11-28 If the last command was of the form (...) and a trap on EXIT or

ERR was set, and the command inside () modified the trap, then

the original trap wasn't executed.

01-11-26 The value for 0 is now preceded by the base number when

the base was not 10.

01-11-26 The default has compilation mode has been changes so that

viraw mode will always be on.

01-10-31 --- Release ksh93m ---

01-10-31 A for loop optimizer bug for subshells contained withing for

loops has been fixed.

01-10-16 typeset without arguments no longer outputs variable names

that do not have any attributes that are set.

01-10-16 A bug introduced in ksh93l in which assignments specified with

the exec built-in were not being expanded properly has been

fixed.

01-10-11 An optimization bug in which ${!x) was treated as invariant in

a for loop has been fixed.

01-10-11 Unsigned integer variables in bases other than 10 are printed now

expand in that base with the base prefix.

01-10-10 A number of typos in the self generating man pages for shell

built-ins have been fixed.

01-10-04 The self generated man pages for hist and fc were not working

correctly and have been fixed.

01-10-03 Yet another optimizer bug in which shell patterns were

treated as invariants has been fixed.

01-09-27 Two bugs relating to multibyte history searches and to find

have been fixed.

01-09-27 A bug introduced in ksh93k in which the PATH searching was

not restored after running a command with an assignment list

has been fixed.

01-09-26 A bug in which a zero filled field was treated as octal when

converted to integer has been fixed.

01-09-26 Yet another bug in the optimization of for loops related to

recursive functions with break or continue statements has been fixed.

01-09-25 The exponentiation operator ** was added to the shell arithmetic

evaluation. It has higher precedence than * and is left

associative.

01-09-25 The code was modified to use the ast multibyte macros

and functions for handing multibyte locales.

01-09-25 The expansion ${parameter:offset:length} now handles negative

offsets which cause offsets to be measured from the end.

01-09-25 Some spelling errors in the documentation were corrected.

01-09-24 The /dev/tcp/host/port and /dev/udp/host/port now allow

the ports to be specified by service name.

01-09-24 The change staring with ksh93g in which the the appropriate

library path variable is prepended with a corresponding library

directory has been modified. With the new method, only the

library path defined in the file named .paths in the directory

where the executable is found will be modified. See the

man page for more details.

01-09-23 The .fpath file (see ksh93h) is no longer looked for in each

directory on the path to locate function directories. The

file named .paths is used instead.

01-09-23 A bug in which IFS was not being restored after being changed in

a subshell has been fixed.

01-09-16 With the vi and emacs edit modes, after a list of command

or functions is generated with = or M-= respectively,

any element from the list can be pasted on the command line

by preceding the = or M-= with a numeric parameter specifying

the position on the list.

01-09-16 A bug in ksh93l caused command completion not to find aliases

and functions. Command listing from the edit mode was presented

in reverse order. This has been fixed.

01-09-13 Another bug in the optimization of for loops related to subshells

when traps were set has been fixed.

01-09-07 A change in ksh93l caused brace expansion to stop working

and this has been fixed.

01-09-04 A bug introduced in ksh93k in which an arithmetic statement

within a function that used name references did not follow the

reference has been fixed.

01-09-04 A bug introduced in ksh93l in which export -p did not prefix

each export with the word export has been fixed.

01-08-29 A bug in multibyte input which occurred when a partial multibyte

character was received has been fixed.

01-08-29 A bug introduced in ksh93l which could cause a core dump

when an assignment list containing PATH is specified inside

command substitution has been fixed.

01-08-09 Another bug in the optimization of for loops in ksh93l caused

errors in recursive functions using local variables that

contained for loops has been fixed.

01-07-27 A bug in which IFS would be unset after a command substitution

inside a here document has been fixed.

01-07-26 To conform to the POSIX standard, if you invoked ksh name,

and name does not contain a /, it will first try to run

one in the current directory whether it is executable or not

before doing a path search for an executable script. Earlier

versions first checked for an executable script using the

PATH variable.

01-07-23 A bug in which unset -f invoked in a subshell could unset a

function defined in the parent has been fixed.

01-07-16 A bug in the optimization of for loops in ksh93l caused

name references to be treated as invariants has been fixed.

01-07-09 A bug in which a discipline function applied to a local variable

could cause a shell exception has been fixed. Discipline

functions can only be specified for global variables.

01-06-18 --- Release ksh93l ---

01-06-18 A bug in assigning integers larger than can be represented as

long integers to floating point variables has been fixed.

01-06-18 A bug in the handling of unsigned integers (typeset -ui) has

been fixed.

01-06-04 The evaluation of the PS1 prompt no longer effects the value

of the $? variable.

01-06-01 A small memory leak from subshells has been fixed.

01-05-22 A bug in which attributes for variables that did not have

values would be lost after a subshell has been fixed.

01-05-22 The %R format has been added to convert a shell pattern into

an extended regular expression.

01-05-22 The escape sequences \e, \cX, \C[.collating-element.], and

\x{hex} have been added to ASCII-C strings and to printf format

strings.

01-05-20 Patterns of the form {n}(pattern) and {m,n}(pattern) are now

recognized. The first form matches exactly n of pattern whereas,

the second form matches from m to n instances of pattern.

01-05-20 The shell allows *-(pattern), +-(pattern), ?-(pattern),

{m,n}-(pattern}, and @-(pattern) to cause the minimal

match of pattern to be selected whenever possible rather

than the maximal (greedy) match.

01-05-20 The character class [:word:] has been added to patterns.

The word class is the union of [:alnum:] and the character _.

01-05-20 Inside (...) pattern groups, the \ character is now treated

specially even when in an enclosing character class. The

sequences, \w, \d, \s are equivalent to the character classes

word, digit, and space respectively. The sequences \W, \D,

and \S are their complement sets.

01-05-20 The shell now recognizes pattern groups of the form

~(options:pattern) where options or :pattern can be omitted.

Options use the letters + and - to enable and disable options

respectively. The option letters g (greedy), i (ignore case)

are used to cause maximal matching and to cause case

insensitive matching respectively. If :pattern is also

specified, these options are only in effect while this

pattern is being processed. Otherwise, these options remain

in effect until the end of the pattern group that they are contained

in or until another ~(...) is encountered. These pattern groups

are not counted with respect to group numbering.

01-05-14 When edit completion, expansion, or listing occurs in the

middle of a quoted string, the leading quote is ignored when

performing the completion, expansion, or listing.

01-05-14 A small memory leak from subshells has been fixed.

01-05-10 A bug in which open files were not restored after a subshell

that had used exec to replace a file has been fixed.

01-05-10 Redirection to a null file name now generates an error message.

01-05-09 The shell now rejects some invalid parameter substitutions that

were previously processed in undefined ways.

01-05-09 A bug in which the output of select was not flushed before the

read when input did not come from the terminal has been fixed.

01-05-08 A bug in which job ids would not be freed for interactive shells

when subshells ran built-ins in the background has been fixed.

01-05-08 The FPATH variable now requires an explicit . to cause the

current directory to be treated as a function directory.

01-05-08 A bug in read -n when echo mode was disabled has been fixed.

01-05-07 A bug in which function definitions could be listed as part

of the history has been fixed.

01-04-30 This release uses a new and often much faster pattern matcher than

earlier releases.

01-04-30 An optimizer now eliminates invariant parameter expansions from

for while and until loops.

01-04-30 The variable .sh.match is set after each pattern match (# % or /)

in a variable substitution. The variable .sh.match is an

indexed array with element 0 being the complete match.

The array is only valid until the next subsequent pattern

match or until the value of the variable changes which ever

comes first.

01-04-30 A self generating man page has been added to shcomp. Also,

shcomp now stops compiling when it finds an exit or exec

command and copies the remainder so that it can be used

for standard input.

01-04-30 The shcomp command was modified so that it can work in an

EBCIDIC environment and that binary scripts are portable

across environments.

01-04-30 A bug in the handling of a trailing : in PATH has been fixed.

01-04-30 A bug in which the builtin version of a command would get invoked

even though the full pathname for the command was specified

has been fixed.

01-04-30 A bug in which read would loose the last character when

reading the last line of a file that did not contain a new-line

character has been fixed.

01-04-23 A bug on some systems in which in vi mode the end of file

character and end of line character could be swapped has

been fixed.

01-04-23 A bug on some systems in which invoking a shell script that

did not have execute permission could set the exit value to

127 rather than 126 has been fixed.

01-04-20 A bug in which read -n from a pipe would block if fewer than

n characters was received has been fixed.

01-04-09 A bug in which invalid patterns, for example, ) by itself,

was not treated as a string has been fixed so that if i=')',

then [[ $i == $i ]] is true.

01-04-09 The shell arithmetic now interprets C character constants.

01-04-09 A bug in which a non-zero return from a function defined

with the function reserved word did not trigger the ERR

trap or exit with set -e has been fixed.

01-04-02 A bug on some systems, in which characters above 127 were

not displayed correctly in vi or emacs edit mode has been fixed.

01-04-02 A bug on some systems, introduced in the 'k' point release, in

which the erase character in viraw mode was moving the cursor

to the left without erasing the character has been fixed.

01-04-02 On some systems the wcwith() function was returning a wrong

value for characters and caused characters to be displayed

incorrectly from the shell edit modes. A work around for

this problem has been added.

01-03-26 A bug in which valid scripts could produce syntax errors

when run with locales that considered characters such as "'"

to be space characters has been fixed.

01-03-20 A bug in which an syntax error in an arithmetic expression

entered interactively could cause the shell to go into

an infinite loop outputting the error message has been fixed.

01-03-10 ksh93 accepts -l as a synonym for -L in test on systems for

which /bin/test -l tests for symbolic links.

01-03-10 A bug in parsing scripts in which { and } are used in place of

in and esac in case statements embedded in compound commands

has been fixed. Use of { and } for in and esac is obsolete.

01-03-06 A bug in which an argument of the form foo=bar was not

being passed correctly to a traced function whose name

was foo has been fixed.

01-03-02 Using $(trap -p name) did not print the name of the current

trap setting for trap name.

01-02-26 Exported floating point variables gave incorrect results

when passing them to ksh88. This has been fixed.

01-02-25 A race condition in which a coprocess which completed too quickly

would not allow subsequent coprocesses to start has been fixed.

01-02-25 The 'g' format specifier is now handled by printf. It had

inadvertently been omitted.

01-02-20 The + was not being displayed during an execution trace

with the += assignment operator.

01-02-19 The error message which occurs when the interpreter name

defined on the #! line does not exist is more informative.

01-02-19 A bug in which $0 would not be set correctly when a

script with #! was invoked by full pathname from the

directory of the script has been fixed.

01-02-19 A shell script did not always pick up tty mode changes

made by external commands such as stty which could

effect the behavior of read.

01-02-19 The -u, -g, and -k unary tests did not give the correct

results when used with negation and this has been fixed.

01-02-05 --- Release ksh93k+ ---

01-02-05 The sequence \<newline> inside $'...' was not incrementing

the line count and this has been fixed.

01-02-05 Modified expansion of "${@-}" so that if no arguments are set

it results in null string rather than nothing.

01-02-02 memory leak problem with local variables in functions fixed.

01-01-25 allow arithmetic expressions with float%int and treat them

as ((int)float)%int rather than as an error.

01-01-19 read -n1 was not working and has been fixed.

01-01-17 ksh now handles the case in which a here document in command

substitution $() is terminated by the trailing ). Previously,

a new-line was needed at the end of the delimiter word.

01-01-02 A bug in which a KEYBD trap would cause a multi-line token

to be processed incorrectly has been fixed.

00-12-10 Arithmetic integer constants can now have L and U suffices.

00-12-10 A bug in the processing of arithmetic expressions with compound

variables when the -n option is on has been fixed.

00-12-08 A bug in M-f and M-b from emacs mode has been fixed. This

bug only occurs when ksh93 is compiled without MULTIBYTE enabled.

00-11-29 A bug in which jobs -p would yield 0 for background

jobs run in a script has been fixed.

00-11-21 A bug in integer arrays in which the number of elements is

incorrect when the ++ operator is applied to a non-existing

element has been fixed. For example, integer x; ((x[3]++)).

00-11-20 A timing bug in which the shell could reset the terminal

group to the wrong value in the case that the a new process

changes the terminal group during startup has been fixed.

00-10-27 --- Release ksh93k ---

00-10-27 Using tab for completion now works only when applied

after a non-blank character at the end of the current line.

In other case a tab is inserted.

00-10-27 A bug in the emacs edit mode for ^X^E has been fixed.

The ^X^E sequence is supposed to invoke the full editor

on the current command.

00-10-18 A bug in which expansions of the form ${var//pattern/string}

did not work correctly when pattern was '/' or "/" has

been fixed.

00-10-18 The output format for indexed arrays in compound variables

has been modified so that it can be used as input.

00-10-18 Assignments with name references (typeset -n) will now

implicitly unreference an existing name reference.

00-10-17 A bug the += append operator when a single array element

is appended to a variable that is not an array has been fixed.

00-10-16 A bug in which the SIGCONT signal was being sent to

each process will kill -0 or kill -n 0 has been fixed.

00-10-12 The arithmetic evaluation portion has been rewritten to

perform a number of optimizations.

00-10-10 A bug in which name prefix matching ${!name.*} was not

checking name to see if it was a name reference has been fixed.

00-09-26 A bug in the multibyte version in which the width of for

non-printing characters was not correct has been fixed.

00-09-12 Made changes to get multibyte editing work on UWIN for windows

00-09-12 A bug in which multibyte characters would be displayed incorrectly

has been fixed.

00-08-08 Removed build dependency on iswprint() and iswalph().

00-07-20 In some cases the read builtin would read more than a single

line from a pipe on standard input and therefore leave the seek

position in the wrong location.

00-07-05 If the directory / is on the path, a / will not be inserted

between the directory and the file name during path searching

to avoid searching // for systems that treat this specially.

00-06-26 A bug in which on rare occasions wait could return before all

jobs have completed has been fixed.

00-06-21 A bug in which backspace did not work correctly during the

R replace directive in vi-mode has been fixed.

00-06-12 Added variable name completion/expansion/listing to the set of

completions. Variable name completions begin with $ or "$ followed

by a letter.

00-05-09 --- Release ksh93j ---

00-05-09 Modified command substitution to avoid using /tmp files when

run on read-only file systems.

00-04-17 Modified printf to handle '%..Xc' and '%..Xs' options where X

is not an alpha character. Previous versions core dumped with this.

00-04-10 Changes to multibyte editing code were made to use standard

ISO C functions rather than methods devised before the standard.

00-04-09 Add %H options to printf to output strings with <"'&\t> properly

converted for use in HTML and XML documents.

00-04-07 Modified getopts builtin to handle \f...\f in usage string

by invoking specified function.

00-04-04 Added self generating man pages for bg, fc, fg, disown, jobs,

hist, let, ., and ulimit.

00-03-30 The append operator += has been added and can be used

for all assignments, strings, arrays, and compound variables.

00-03-30 Code was modified in several places to support automatic

generation of C locale dictionaries.

00-03-28 A bug in which the set and trap commands invoked with --name

type arguments would terminate the invoking script has

been fixed.

00-03-27 A bug in which the library path variable was not updated

correctly on some systems as described in the 'g' point

release has been fixed.

00-03-07 printf now returns a non-zero exit status when one of

its arguments cannot be converted to the given type.

00-03-05 The return value and error message for a command that

was found on the path but was not executable was set

incorrectly.

00-03-05 A prototype for ioctl() was removed from the vi edit mode.

00-01-28 --- Release ksh93i ---

00-01-28 Most of the built-in commands and ksh itself are now

self documenting. Running command --man will produce

screen output. Running command --html produces the

man page in html format.

00-01-28 The getopts builtin can process command description

strings to produce man pages.

00-01-28 A bug in which a script could terminate when getopts

encountered an error when invoked inside a function

has been fixed.

00-01-28 When a symbolic link was specified as the name of

the script to invoke by name, the value of $0 was

set to the real file name rather than the link name

in some cases and this has been fixed.

00-01-28 A bug in which the precision given as an argument

to printf was not working has been fixed.

99-03-31 --- Release ksh93h ---

99-03-31 The PATH search algorithm has been modified to look

for a file named .fpath in each bin directory and if

found, to search for functions in this directory if

it cannot find the command in that directory.

99-03-31 When performing pathname expansion, the shell checks

to see whether each directory it reads is case sensitive

or not, and performs the matching accordingly.

99-03-31 The %T format for printing formatted date/time.

99-03-31 The emacs and vi modes now handle arrow keys when

they use standard ANSI escape sequences.

99-03-31 The TAB key can be used for completion in emacs and viraw mode.

99-03-31 A bug in setting .sh.editchar during the KEYBD trap

for the MULTIBYTE option was fixed in release ksh93h.

99-03-31 A bug in shcomp for compilation of unary operators with [[...]]

has been fixed.

99-03-31 A bug in which the value of $? was changed when executing

a keyboard trap has been fixed.

99-03-31 The handling of SIGCHLD has been changed so that the

trap is not triggered while executing trap commands

to avoid recursive trap calls.

99-03-31 A bug in which a local variable in a function declared readonly

would generated an error when the function went out of

scope has been fixed.

99-03-31 A bug in which \<new_line> entered from the keyboard

with the KEYBD trap enabled has been fixed.

99-03-31 The error message for a misplaced ((, for example print ((3),

was often garbled and has been fixed.

99-03-31 A bug in the KEYBD trap in which escape sequences of the form

<ESC>[#~ were not being handled as a unit has been fixed.

99-03-31 A bug in which ksh would consider expressions like [[ (a) ]]

as syntax errors has been fixed.

99-03-31 A function defined as foo() without a function body

was not reported as a syntax error.

99-03-31 A bug in which ksh could run out of file descriptors when

a stream was repeatedly opened with exec and read from

has been fixed.

98-04-30 --- Release ksh93g ---

98-04-30 The pipefail option has been added. With pipefail

enabled, a pipeline will not complete until all

commands are complete, and the return value will

be that of the last command to fail, or zero if

all complete successfully.

98-04-30 The name-value pair library uses the cdt library rather

than the hash library. This change should be transparent

to applications.

98-04-30 On the U/WIN version for Window 95 and Windows NT,

when a directory beginning with a letter followed by

a colon is given to cd, it is assumed to be an absolute

directory

98-04-30 When an executable is found on a given path,

the appropriate library path variable is prepended

with a corresponding library directory.

98-04-30 A bug in which a name reference could be created to

itself and later cause the shell to get into an infinite

loop has been fixed.

98-04-30 A bug in shcomp relating to compound variables was fixed.

98-04-30 A bug introduced in ksh93e in which leading 0's in -Z

fields caused the value to be treated as octal for arithmetic

evaluation has been fixed.

98-04-30 A bug when a name reference with a shorter name than

the variable it references was the subject of a compound

assignment has been fixed.

98-04-30 A bug which in which assignment to array variables in

a subshell could effect the parent shell has been

fixed.

98-04-30 read name?prompt was putting a 0 byte at the end of the

prompt on standard error.

98-04-30 A bug in [[ string1 > string2 ]] when ksh was run with -x

has been fixed.

98-04-30 A bug in which the escape character was not processed

correctly inside {...} when brace expansion is enabled

has been fixed, for example {\$foo}.

98-04-30 A bug in line continuation in here-documents has been

fixed.

98-04-30 The default base when not specified with typeset -i is

10 in accordance with the documentation. Previously,

the value was determined by the first assignment.

98-04-30 A parsing bug in which a # preceded alphanumeric

characters inside a command substitution caused

a syntax error to be reported has been fixed.

98-04-30 A bug in which a decimal constant represented as 10#ddd

where ddd was more than five digits generated a syntax

error has been fixed.

98-04-30 A bug in here document expansion in which ${...} expansions

were split across buffer boundaries has been fixed.

98-04-30 The sh_fun() function now takes third argument which

is an argument list for the invoked discipline function

or built-in.

98-04-30 A callback function can be installed which will give

notification of file duplications and file closes.

98-04-30 When ksh is compiled on systems that do not use fork()

current option settings where not propagated to sub-shells.

97-06-30 --- Release ksh93f ---

97-06-30 Hostnames in addition to host addresses can be given in

/dev/tcp/host/port virtual file names.

97-06-30 File name completion and expansion now quotes special

characters in file names from both emacs and vi edit modes.

97-06-30 An empty for list behave like a for list with null expansions.

It produces a warning message with sh -n.

97-06-30 The code has been modified to work with EBCDIC as well as ASCII.

97-06-30 A bug which would cause the secondary prompt to be

displayed when a user entered a literal carriage

return has been fixed.

97-06-30 A bug which caused ksh read -s name to core dump was

fixed.

97-06-30 A bug with the expansion of \} and \] inside double

quoted strings that also contained variable expansions

has been fixed

97-06-30 Changes in the ksh93e point release caused autoload

functions invoked from within command substitution

to fail. This has been fixed.

97-06-30 A bug in the processing of here-documents that could

prevent variable substitution to occur after $(...) command

substitution for long here documents has been fixed.

97-06-30 A bug caused by a race condition that could cause SIGTERM

to be ignored by a child process has been fixed.

97-06-30 A bug which prevented the startup of a coprocess immediately

after killing a running coprocess has been fixed.

97-06-30 ulimit foobar, where foobar is not an arithmetic

expression, now gives an error message as it did with ksh88

instead of setting the file size limit to 0.

97-06-30 A bug which could cause an interactive shell to terminate when

the last process of a pipeline was a POSIX function was fixed.

97-06-30 A bug which could cause command substitution of a shell script

to core dump has been fixed.

97-06-30 A security hole was fixed in suid_exec.

97-06-30 Arithmetic functions such as pow() that take more than

one argument, did not work if arguments other than the

first contained parenthesized sub-expression.

97-06-30 The error message from a script containing an incomplete

arithmetic expression has been corrected.

97-06-30 A bug which caused a core dump on some machines when

the value of a name reference contained a positional

parameter and the name reference was not defined inside

a function has been fixed.

97-06-30 Arithmetic expressions now correctly handle hexadecimal

constants.

97-06-30 A bug in which integer variables could be expanded

with a leading 10# when declared with typeset -i

multiple times has been corrected.

97-06-30 A bug in which IFS wasn't correctly restored when

set within command substitution has been fixed.

97-06-30 The _ character is now considered as part of a word

with the M-f and M-b emacs directives as it was in ksh88.

97-06-30 A bug in brace pattern expansions that caused expressions

such as {foo\,bar,bam} to expand incorrectly have been fixed.

96-07-31 --- Release ksh93e ---

96-07-31 The math functions, atan2, hypot, fmod, and pow were added.

96-07-31 When a shared library is loaded, if the function lib_init()

is defined in the library, it is invoked the first time that

the library is loaded with builtin -f library.

96-07-31 The k-shell information abstraction database option, KIA,

has been revamped.

96-07-31 Empty command substitutions of the form $() now work.

whence -v foo now gives the correct result after calling

builtin -d foo.

96-07-31 A bug in right to left arithmetic assignment for which

the arithmetic expression (( y = x = 1.5 )) did not

yield 1 for y when x was declared typeset -i was fixed.

96-07-31 printf has been fixed to handle format containing \0

and/or \0145 correctly. In addition, characters following

%b in the format string are no longer displayed when

the operand contains \c.

96-07-31 A bug in printf that could cause the %E format to

produce unnormalized results has been fixed.

96-07-31 A bug which causes some arithmetic expressions to be

incorrectly evaluated as integer expressions rather

that floating point has been fixed.

96-07-31 Functions defined inside a subshell no longer remain

defined when the subshell completes.

96-07-31 The error message from sh -c ';echo foo' has been

corrected.

96-07-31 The format for umask -S has been changed to agree

with the specification in the POSIX standard.

96-07-31 A bug that caused side effects in subscript evaluation

when tracing was enabled for subscripts using ++ or --

has been fixed.

96-07-31 To conform to the Posix standard getopts has been changed

so that the option char is set to ? when it returns with

a non-zero exit status.

96-07-31 The handling of \} inside ${name...} has been fixed so

that the \ quotes the }.

96-07-31 A bug that caused the read builtin to resume execution

after processing a trap has been fixed.

96-07-31 [[ -s file ]] has been fixed so that if file is open

by ksh, it is flushed first.

96-07-31 In some cases attributes and sizes for non exported

variables weren't being reset before running a script.

96-07-31 The value of TMOUT was affected by changes make to

it in a subshell.

96-07-31 The jobs command did not reflect changes make by

sending the CONT signal to a command.

96-07-31 The error message for ksh -o unknown was incorrect.

96-07-31 Functions invoked as name=value name, did not use

values from the calling scope when evaluating value.

96-07-31 A bug in which the shell would reexecute previously

executed code when a shell script or coprocess was

run in the background has been fixed.

96-07-31 A bug in which an empty here-document would leave

a file descriptor open has been fixed.

96-07-31 A bug in which $(set -A array ...) would leave a

side effect has been fixed.

96-07-31 A discipline function for a global variable defined

within a function defined with the function keyword,

incorrectly created a local variable of the same name

and applied the discipline to it.

95-08-28 --- Release ksh93d ---

95-08-28 The \ character was not handled correctly in replacement

patterns with ${x/pattern/replace}.

95-08-28 A bug with read in which the line did not end with

a new-line has been fixed.

95-08-28 A bug in file name generation which sometimes

appended a . for filenames that ended in / has

been fixed.

95-08-28 If a process is waited for after a status has

been returned by a previous wait, wait now

returns 127.

95-08-28 A bug with hist (fc) -e which prevented a command

to re-executed after it had been edited has been fixed.

95-08-28 A bug which prevented quoting from removing the meaning

of unary test operators has been fixed.

95-08-28 A bug with typeahead and KEYBOARD traps with the

MULTIBYTE option set has been fixed.

95-08-28 Builtin functions can take a third argument which is

a void*.

95-08-28 The nv_scan() function can restrict the scope of a walk

to the top scope.

95-04-31 --- Release ksh93c ---

95-04-31 The expansion of "$@" was incorrect when $1 was the null

string.

95-04-31 A bug which could incorrectly report a syntax error in

a backquoted expression when a $ was preceded by \\

has been fixed.

95-04-31 A bug which prevented the shell from exiting after

reporting an error when failing to open a script

has been fixed.

95-04-31 A bug that could lead to memory corruption when a

large here document that required parameter or command

substitution was expanded has been fixed.

95-04-31 A bug that could cause a core dump on some systems

after ksh detected an error when reading a function

has been fixed.

95-04-31 A bug which could cause a coprocess to hang when

reading from a process that has terminated has been fixed.

95-04-31 A bug which caused a script to terminate when set -e

was on and the first command of and && or || list

failed has been fixed.

95-04-31 A bug with here documents inside $(...) when the delimiter

word is an identifier has been fixed.

95-04-31 A bug which caused $0 to display the wrong value when

a script was invoked as an argument to the . command

and the eval command has been fixed.

95-04-31 A bug that could cause the built-in sleep to hang

has been fixed.

95-04-31 A bug introduces in 12/28/93b which caused the backslash

to be removed when it was followed by digit inside double

quotes in some instances has been fixed.

95-04-31 A bug which could cause a core dump if ksh was invoked with

standard input closed has been fixed.

95-04-31 A bug which could cause a core dump if typeset -A was

specified for an existing variable has been fixed.

95-04-31 Variables that were unset but had attributes such as readonly

and export were not listed with readonly, export and typeset.

95-04-31 Several problems with signals have been fixed.

95-04-31 A bug which prevented ulimit -t from working has been fixed.

Also, a bug in which failed ulimits could cause a core dump

has also been fixed.

95-04-31 A bug in expansion of the form ${name/#pattern/string} and

${name/%pattern/string} has been fixed.

95-04-31 A bug which caused read -r on a line that contained only

blanks to get a non-null value has been fixed.

95-04-31 A bug introduced in the 'a' point release in which

${x='\\'} expanded to \ when x was unset has been fixed.

95-04-31 A bug which prevented a trap on EXIT from being executed

when the last command in a script was a function invocation

has been fixed.

95-04-31 A bug which caused an interactive shell ignore input when

standard error was redirected to a file with exec,

and then restored with exec 2>&1 has been fixed.

95-04-31 An interactive shell turns on monitor mode even when

standard error has been redirected to a file.

95-04-31 A bug which could cause standard input to be incorrectly

positioned for the last command of a script has been fixed.

95-04-31 A bug in the edit modes which allowed walking back in

the history file for more than HISTSIZE commands has

been fixed.

95-04-31 A bug which could cause a core dump if variable TMPDIR was

changed between two command substitutions has been fixed.

95-04-31. A bug which prevented a trap on EXIT from being cleared

has been fixed.

95-04-31 A bug fixed for the v directive in vi MULTIBYTE has been

fixed.

95-04-31 Code to for IFS handling of multibyte characters has

been added.

95-04-31 The displaying of multibyte strings in export, readonly,

typeset, and execution traces has been fixed.

95-04-31 Variables inside functions are now statically scoped.

The previous behavior was never documented.

95-04-31 Variables inside functions are now statically scoped.

The previous behavior was never documented.

95-04-31 A few changes have been made to the name-value library

that affect built-ins that use disciplines. The

changes allow disciplines to be shared by variables

and should make it possible to add new disciplines

without recompilation.

95-04-31 The name-value library interface has undergone significant

change for this revision. See the new nval.3 man page.

94-12-31 --- Release ksh93b ---

94-12-31 Variables inside functions are now statically scoped.

The previous behavior was never documented.

94-12-31 If IFS contains two consecutive identical characters belonging

to the [:space:] class, then this character is treated as

a non-space delimiter so that each instance will delimit

a field. For example, IFS=$'\t\t' will cause two consecutive

tabs to delimit a null field.

94-12-31 The getopts command has a -a name option that specifies a

name that will be used for usage messages.

94-12-31 A bug which caused unset RANDOM to dump core has been

fixed.

94-12-31 A bug which prevented return for terminating a profile

or ENV file has been fixed.

94-12-31 A bug which prevented standard input from being

directed to /dev/null for background jobs when

monitor mode was turned off has been fixed.

94-12-31 Statements of the form typeset -options var[expr]=value

did not perform substitutions on expr as expected.

94-12-31 A bug which prevented the shell from sending a HUP

signal to some background jobs that were not disowned

has been fixed.

94-12-31 A bug which allowed a script to trap signals that are

ignored at the time that the shell was invoked by exec

has been fixed.

94-12-31 A bug which could cause a core dump when a discipline

function was unset within a discipline was fixed.

94-12-31 The typeset builtin now accepts a first argument of

+ or - for compatibility with ksh88.

94-12-31 For compatibility with ksh88, the results of expansions

of command arguments will treat the extended character

match characters ()|& as ordinary characters.

94-12-31 A bug which caused read to fail on a file that was

open for read/write with <> when the first operation

was print or printf has been fixed.

94-12-31 When a job is suspended, it is put on the top of

the job list as required by the POSIX standard.

94-12-31 The value of OPTARG when an option that required

an argument but didn't have one was incorrect in the

case the the option string began with a :.

94-12-31 A bug which caused the terminal to get into a bad

state with some KEYBD traps in vi-mode has been fixed.

94-12-31 A bug which caused an invalid trap to cause a script

to terminate, rather than just return an error, has

been fixed.

94-12-31 Backreferencing sub-expressions in patterns and replacement

strings now works.

94-12-31 A bug in chmod which caused the -R option to fail has

been fixed.

94-12-31 More signal names have been added for Solaris

94-06-30 --- Release ksh93a ---

94-06-30 An expansion bug which causes portions of a word after

a $((...)) expansion that contains a nested $var expansion

to be lost has been fixed.

94-06-30 A bug that caused a core dump when a script that did not

have PWD set and did a cd inside command substitution

has been fixed.

94-06-30 A bug which caused a core dump on some machines when

the LANG variable was assigned to has been fixed.

94-06-30 A bug which incorrectly handled set disciplines that

performed arithmetic evaluation when the discipline

was called from the arithmetic evaluator has been fixed.

94-06-30 A bug caused by an EXIT trap inside a function that

was executed in a subshell was fixed.

94-06-30 If foo is a function, and not a program, then command foo

now reports that foo isn't found rather than invoking foo.

94-06-30 The previous version incorrectly listed -A as an

invocation option. The -A option is only for set.

94-06-30 A bug was fixed which caused ksh to loop when execution trace

was enabled and the PS4 prompt required command substitution.

94-06-30 A bug which could cause the job control switch character

to be disabled when a script that enabled monitor mode

terminated was fixed.

94-06-30 A bug in the macro expansion global replacement operator //,

when the pattern began with a [ or +( has been fixed.

94-06-30 A bug which prevented ~ expansion from occurring when

it was terminated with a colon inside an assignment

has been fixed.

94-06-30 A bug in the dot command which prevented autoload functions

from working has been fixed.

94-06-30 A bug which caused a variable to be unset if the

its value were expanded inside a set discipline has

been fixed.

94-06-30 Whence -a now longer reports that a defined function

is undefined.

94-06-30 A bug on some systems in which $0 would be incorrect

in scripts invoked by name has been fixed.

94-06-30 Here documents with an empty body now work.

94-06-30 A bug which disabled argument passing and resetting

of options for a script invoked by name inside a

function has been fixed.

94-06-30 A bug in which an EXIT trap set the caller of a function

would be executed if a command called inside a function

was not found has been fixed.

94-06-30 A bug which allowed a script to trap signals that are

ignored at the time that the shell was invoked has

been fixed.

94-06-30 A bug which caused 2<&1- when applied to a shell built-in

to leave standard input closed has been fixed.

94-06-30 A bug which caused the shell to incorrectly parse

$() command substitutions with nested case statements

has been fixed.