On Thu, Jan 15, 2004 at 03:14:57PM -0500, Sam Steingold <[EMAIL PROTECTED]> wrote: > the cygwin regex is not POSIX. > backrefs are not available by default (apparently you need REG_BACKR for > that), "(a|)*" cannot be compiled because of "empty (sub)expression", > &c &c. > any plans to fix this? (e.g., by replacing it with gnu regex?) > thanks.
SUSv3 says: A vertical-line appearing first or last in an ERE, or immediately following a vertical-line or a left-parenthesis, or immediately preceding a right-parenthesis, produces undefined results. Also, it says backrefs part of basic regular expressions but not exteneded ones. From your mention of | I assume you are using REG_EXTENDED. If REG_EXTENDED|REG_BACKR allows backrefs, it doesn't appear to be documented. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
