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| author | Martin Stadler <mail.martin.stadler@gmx.at> | 2024-04-11 09:16:32 (GMT) |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2024-04-11 12:46:37 (GMT) |
| commit | dc7a810a757749bcc24fbab446fb017ac4e65136 (patch) | |
| tree | 5856c497d5b0993b3af017dcc0fbbe10ed4dc200 /Help | |
| parent | fcdc6e61734ccfaef10dbcfe0d05f05043603803 (diff) | |
| download | CMake-dc7a810a757749bcc24fbab446fb017ac4e65136.zip CMake-dc7a810a757749bcc24fbab446fb017ac4e65136.tar.gz CMake-dc7a810a757749bcc24fbab446fb017ac4e65136.tar.bz2 | |
Help: Clarify documentation on regex character classes
In particular, give an example of matching `]`.
Diffstat (limited to 'Help')
| -rw-r--r-- | Help/command/string.rst | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/Help/command/string.rst b/Help/command/string.rst index 2f01653..6bd56a1 100644 --- a/Help/command/string.rst +++ b/Help/command/string.rst @@ -136,15 +136,16 @@ The following characters have special meaning in regular expressions: or ``\\`` for a literal backslash ``\``. Escaping a non-special character is unnecessary but allowed, e.g. ``\a`` matches ``a``. ``[ ]`` - Matches any character(s) inside the brackets + Matches any character(s) inside the brackets. + To match a literal ``]``, make it the first character, e.g., ``[]ab]``. ``[^ ]`` - Matches any character(s) not inside the brackets + Matches any character(s) not inside the brackets. + To not match a literal ``]``, make it the first character, e.g., ``[^]ab]``. ``-`` - Inside brackets, specifies an inclusive range between - characters on either side e.g. ``[a-f]`` is ``[abcdef]`` - To match a literal ``-`` using brackets, make it the first - or the last character e.g. ``[+*/-]`` matches basic - mathematical operators. + Inside brackets, specifies an inclusive range between characters on + either side, e.g., ``[a-f]`` is ``[abcdef]``. + To match a literal ``-`` using brackets, make it the first or the last + character, e.g., ``[+*/-]`` matches basic mathematical operators. ``*`` Matches preceding pattern zero or more times ``+`` |