POSIX regex snarfed from Doug McIlroy's C++. Converted to C by Glenn

Fowler. *'d features have been added to Doug's original code. testre

should compile with other regex implementations, but you may need to

run with -c to catch non-terminating loops and memory faults.

FEATURE BRE ERE ARE

------- --- --- ---

negation NO expr \! expr !

conjunction NO expr \& expr expr & expr

NULL subgroups YES NO YES

word boundaries* \< expr \> \< expr \> < expr >

minimal match* NO REG_MINIMAL REG_MINIMAL

shell patterns* REG_SHELL NO NO

ksh patterns* NO NO REG_SHELL

This directory contains AT&T test harnesses and data for the X/Open pattern

matching routines:

HARNESS HEADER FUNCTIONS

------- ------ ---------

testfnmatch.c <fnmatch.h> fnmatch()

testglob.c <glob.h> glob()

testregex.c <regex.h> regcomp(),regexec()

Each test*.c file is a main program driven by the *.dat test data files.

testglob.dat is only for testglob; all other test data files work with

the remaining harnesses.

The Makefile has targets for building harnesses and running tests:

all build all harnesses

test run all tests for all harnesses

test.foo build harness foo and run the foo tests

To run a single test, e.g. the standards.dat tests for testregex,

testregex < standards.dat

If the local implementation hangs or dumps on some tests then run with

the -c option.

The -h option lists the test data format details. The test data files

exercise all features; the harnesses detect and ignore features not

supported by the local implementation.

Extensions to the standard terminology are derived from the AT&T RE

implementation, unified under <regex.h> with these modes:

MODE FLAGS

---- -----

BRE 0 basic RE

ERE REG_EXTENDED egrep RE with perl (...) extensions

ARE REG_AUGMENTED ERE with ! negation, <> word boundaries

SRE REG_SHELL sh patterns

KRE REG_SHELL|REG_AUGMENTED ksh93 patterns: ! @ ( | & ) { }

and some additional flags to handle fnmatch():

REG_SHELL_ESCAPED FNM_NOESCAPE

REG_SHELL_PATH FNM_PATHNAME

REG_SHELL_DOT FNM_PERIOD

The original testregex.c was done by Doug McIlroy at Bell Labs.

The current implementation is maintained by

Glenn Fowler <gsf@research.att.com>

I'd like to make the regression tests as comprehensive as possible.

Send any new tests to me and I'll roll them into the open source

distribution at http://www.research.att.com/sw/download/ with proper

attribution.

Please note that some regression tests nail down unspecified standard behavior.

These should be noted in the test data with 'u' but currently are not.

Experience with other implementations will help clean this up.