959c053d56a076109993a2f14094d20b1f8c0c17Matt SweeneyPOSIX regex snarfed from Doug McIlroy's C++. Converted to C by Glenn

959c053d56a076109993a2f14094d20b1f8c0c17Matt SweeneyFowler. *'d features have been added to Doug's original code. testre

959c053d56a076109993a2f14094d20b1f8c0c17Matt Sweeneyshould compile with other regex implementations, but you may need to

959c053d56a076109993a2f14094d20b1f8c0c17Matt Sweeneyrun with -c to catch non-terminating loops and memory faults.

959c053d56a076109993a2f14094d20b1f8c0c17Matt Sweeney

959c053d56a076109993a2f14094d20b1f8c0c17Matt SweeneyFEATURE BRE ERE ARE

959c053d56a076109993a2f14094d20b1f8c0c17Matt Sweeney------- --- --- ---

959c053d56a076109993a2f14094d20b1f8c0c17Matt Sweeneynegation NO expr \! expr !

959c053d56a076109993a2f14094d20b1f8c0c17Matt Sweeneyconjunction NO expr \& expr expr & expr

959c053d56a076109993a2f14094d20b1f8c0c17Matt SweeneyNULL subgroups YES NO YES

959c053d56a076109993a2f14094d20b1f8c0c17Matt Sweeneyword boundaries* \< expr \> \< expr \> < expr >

959c053d56a076109993a2f14094d20b1f8c0c17Matt Sweeneyminimal match* NO REG_MINIMAL REG_MINIMAL

959c053d56a076109993a2f14094d20b1f8c0c17Matt Sweeneyshell patterns* REG_SHELL NO NO

959c053d56a076109993a2f14094d20b1f8c0c17Matt Sweeneyksh patterns* NO NO REG_SHELL

959c053d56a076109993a2f14094d20b1f8c0c17Matt Sweeney