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STYLE: add docs about the supported regexp characters and CMAKE_MATCH_(0..9) 

Alex
This commit is contained in:
Alexander Neundorf 2007-08-29 14:05:46 -04:00
parent ef13337c1f
commit a4e6bd1515
1 changed files with 14 additions and 1 deletions
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15
Source/cmStringCommand.h
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@ -119,7 +119,20 @@ public:
"RANDOM will return a random string of given length consisting of "
"characters from the given alphabet. Default length is 5 "
"characters and default alphabet is all numbers and upper and "
"lower case letters.";
"lower case letters.\n"
"The following characters have special meaning in regular expressions:\n"
" ^ Matches at beginning of a line\n"
" $ Matches at end of a line\n"
" . Matches any single character\n"
" [ ] Matches any character(s) inside the brackets\n"
" [^ ] Matches any character(s) not inside the brackets\n"
" - Matches any character in range on either side of a dash\n"
" * Matches preceding pattern zero or more times\n"
" + Matches preceding pattern one or more times\n"
" ? Matches preceding pattern zero or once only\n"
" () Saves a matched subexpression, which can be referenced in "
"the REGEX REPLACE operation. Additionally it is saved in the special "
"CMake variables CMAKE_MATCH_(0..9).";
}
cmTypeMacro(cmStringCommand, cmCommand);