Regex for all strings not containing a string?
This question already has an answer here:
You can use negative lookbehind, eg:
.*(?<!.config)$
This matches all strings except those that end with ".config"
Your question contains two questions, so here are a few answers.
Match lines that don't contain a certain string (say .config ) at all:
^(?:(?!.config).)*$r?n?
Match lines that don't end in a certain string:
^.*(?<!.config)$r?n?
and, as a bonus: Match lines that don't start with a certain string:
^(?!.config).*$r?n?
(each time including newline characters, if present.
Oh, and to answer why your version doesn't work: [^abc] means "any one (1) character except a, b, or c". Your other solution would also fail on test.hg (because it also ends in the letter g - your regex looks at each character individually instead of the entire .config string. That's why you need lookaround to handle this.
(?<!.config)$
:)
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