Comments (1)
There's really no way to get this completely right without individually validating each regex. I very specifically wanted to avoid doing that because of the extra cost it would add. With that said, now that I'm thinking about it more, it might be possible to do that with a fast path that skips the check in most cases. (For example, if a pattern doesn't contain a meta character anywhere, then you know it's valid. That would help when searching large dictionaries of literals.)
But yeah, when I added a fix for #2480, I knew it wouldn't work in all cases. Another example of this is rg ')('
. That should be invalid, but it actually works.
With that said, one thing I realized here is that by adding the group around the regex, that group (which the user did not type) now appears in error messages. That's bad juju and I'll need to revert that for that reason alone. When I do that, I'll look into validating each pattern manually.
For PCRE2, we'll probably just need to accept a wontfix
bug there. I don't see a good reason to completely disable multi-pattern matching there just for this reason.
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Related Issues (20)
- consider adding an `rg:` prefix all error messages HOT 1
- issue when using double quotes to search in linux HOT 1
- feat(globset): allow custom component separator characters? HOT 3
- [ignore] Add API for adding glob patterns to ignore HOT 4
- shard regexes when there are many and do multiple passes over the haystack HOT 4
- Ripgrep significantly slower than grep HOT 3
- Ability to ignore non-existent `PATTERNFILE` HOT 2
- multiline search regex wildcard not expanding HOT 1
- Precompiled binary for powerpc64le HOT 1
- Add Vuejs as a file list to type-list HOT 1
- zero or more quantifier does not work HOT 1
- Inconsistent behavior with negation pattern in `.gitignore` HOT 8
- compiling with simd-accel feature is broken due to removal of stdsimd feature in nightly breaking the packed_simd crate HOT 1
- File named `.config` is ignored for no reason HOT 1
- Process substitution search path behavior change in 14.0.0
- [feature] Line masking (ignoring lines or part of lines in matching but displayed in output) HOT 3
- Provide Statically Compiled Binaries for (aarch64|arm64) Linux HOT 4
- Include regex syntax in man page HOT 1
- Include ---no-ignore-files in --unrestricted option? HOT 1
- ripgrep mis-parses `*[\<\>\:\"\/\\\|\?\*]*` in `.gitignore` HOT 2
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