2011-09-29, 13:52(-08), Roger: [...] > Since you're saying the regex description is found within either regex(3) or > regex(7), couldn't there be a brief note within the Bash Manual Page be > something > to the effect: [...]
No, it's not. I suppose bash could say: See your system regex(3) implementation documentation for the description of extended regular expression syntax on your system. That syntax should be compatible with one version or the other of the POSIX Extended Regular Expression syntax whose specification for the latest version as of writing can be found at: http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04 regex(3) points to the API (regex.h), how the system documents the regexps covered by that API is beyond bash knowledge. -- Stephane