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-rw-r--r--Source/cmStringCommand.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/Source/cmStringCommand.h b/Source/cmStringCommand.h
index ed28b4b..d392a3d 100644
--- a/Source/cmStringCommand.h
+++ b/Source/cmStringCommand.h
@@ -92,7 +92,10 @@ public:
"possible and store the matches in the output variable as a list.\n"
"REGEX REPLACE will match the regular expression as many times as "
"possible and substitute the replacement expression for the match "
- "in the output.\n"
+ "in the output. The replace expression may refer to paren-delimited "
+ "subexpressions of the match using \\1, \\2, ..., \\9. Note that "
+ "two backslashes (\\\\1) are required in CMake code to get a "
+ "backslash through argument parsing.\n"
"COMPARE EQUAL/NOTEQUAL/LESS/GREATER will compare the strings and "
"store true or false in the output variable.\n"
"ASCII will convert all numbers into corresponding ASCII characters.\n"