[vim/vim] Add \- as a synonym to \{-\} in magic mode (Issue #20953)
Mazunki Hoksaas
mazunki created an issue (vim/vim#20953)Is your feature request about something that is currently impossible or hard to do? Please describe the problem.
It's sometimes tedious to escape substitution patterns. Given a set of variables like {{foo}} where we want the output {{FOO}}, a solution would be :%s/{{[^}]\+}}/\U&/g in magic mode, and :%s/{{\[^}\]}}/\U&/ in nomagic mode. Thanks to the non-greedy \{-\}, this can be rewritten as :%s/{{.\{-\}}}/\U&/g, which is slightly more readable.
Ideally, I'd like to be able to rewrite this as :%s/{{.\-}}/\U&/g. To me and others, this seems far more readable.
Describe the solution you'd like
Currently, we have \+ for both magic and nomagic modes. We have * in magic mode, and \* in no-magic mode.
I'm suggesting that \{-\} remains unchanged for no-magic mode, but allows for \- as a synonym to \{-\} in magic and verymagic modes. Other flavour of regex have .*? for the same thing. I think \- makes sense since we already have \+ which has a similar role.
This should not affect consumers, since /\\ clearly states that "A backslash followed by a single character, with no special meaning, is reserved for future expansions".
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h_east
h-east left a comment (vim/vim#20953)JFYI, \{-} is the same as \{-\}.
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Mazunki Hoksaas
mazunki left a comment (vim/vim#20953)JFYI,
\{-}is the same as\{-\}.
Thanks. I feel I've learned this a few times, but I end up escaping both sides because it looks more balanced to me, which feels more intuitive; so I end up forgetting. Great shoutout anyway.
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Houl
Houl left a comment (vim/vim#20953)I'd mostly prefer a pattern like {{[^}]\+}} that matches exactly what I want instead of {{.\{-}}} that might skip over arbitrary text.
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Mazunki Hoksaas
mazunki left a comment (vim/vim#20953)@Houl While that's certainly an option, and I believe it's more performant, in my experience most people find lazy-repetition to be far more readable than anti-classes.
Matter of taste, perhaps.
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