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| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | Doc/Zsh/mod_regex.yo | 12 |
2 files changed, 17 insertions, 0 deletions
@@ -1,3 +1,8 @@ +2020-07-07 Nuri Jung <jnooree@gmail.com> + + * github #58: Doc/Zsh/mod_regex.yo: docs: Note that the zsh/regex + syntax is platform-dependent. + 2020-07-06 Pete Moore <pmoore@mozilla.com> * 46194: Doc/Zsh/metafaq.yo: docs: metafaq: Remove spurious diff --git a/Doc/Zsh/mod_regex.yo b/Doc/Zsh/mod_regex.yo index f20451664..40ee92785 100644 --- a/Doc/Zsh/mod_regex.yo +++ b/Doc/Zsh/mod_regex.yo @@ -26,5 +26,17 @@ tt(-regex-match) operator. If tt(BASH_REMATCH) is set, then the array tt(BASH_REMATCH) will be set instead of tt(MATCH) and tt(match). + +Note that the tt(zsh/regex) module logic relies on the host system. The +same var(expr) and var(regex) pair could produce different results on different +platforms if a var(regex) with non-standard syntax is given. + +For example, no syntax for matching a word boundary is defined in the POSIX +extended regular expression standard. GNU tt(libc) and BSD tt(libc) both provide +such syntaxes as extensions (tt(\b) and tt([[:<:]])/tt([[:>:]]) respectively), +but neither of these syntaxes is supported by both of these implementations. + +Refer to the manref(regcomp)(3) and manref(re_format)(7) manual pages on your +system for locally-supported syntax. ) enditem() |