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Add notes on our globs' incompatibilities with POSIX

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[originally from svn r4149]
This commit is contained in:
Jacob Nevins 2004-04-27 12:52:34 +00:00
parent bdfd70375b
commit bb6532810b
1 changed files with 11 additions and 0 deletions
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11
wildcard.c
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@ -29,6 +29,17 @@
* - All other characters are non-special and match themselves.
*/
/*
* Some notes on differences from POSIX globs (IEEE Std 1003.1, 2003 ed.):
* - backslashes act as escapes even within [] bracket expressions
* - does not support [!...] for non-matching list (POSIX are weird);
* NB POSIX allows [^...] as well via "A bracket expression starting
* with an unquoted circumflex character produces unspecified
* results". If we wanted to allow [!...] we might want to define
* [^!] as having its literal meaning (match '^' or '!').
* - none of the scary [[:class:]] stuff, etc
*/
/*
* The wildcard matching technique we use is very simple and
* potentially O(N^2) in running time, but I don't anticipate it