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Add check for non-backtracking subexpressions

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Lauris BH
2022-03-21 13:54:11 +02:00
parent 8eac4cab85
commit ae2b0576a7
4 changed files with 11 additions and 38 deletions
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@ -172,6 +172,8 @@ Parsing [linguist/samples](https://github.com/github/linguist/tree/master/sample
- [Heuristics for ".as" extension](https://github.com/github/linguist/blob/223c00bb80eff04788e29010f98c5778993d2b2a/lib/linguist/heuristics.yml#L67) in ActionScript could not be parsed, due to unsupported positive lookahead in RE2 regexp engine.
- [Heuristics for ".csc", ".gsc" and ".gsh" extension](https://github.com/github/linguist/blob/7469c7982d93f2ad922230d712f586a353dc1a42/lib/linguist/heuristics.yml#L650-L651) in GSC could not be parsed, due to unsupported non-backtracking subexpressions in RE2 regexp engine.
- As of [Linguist v5.3.2](https://github.com/github/linguist/releases/tag/v5.3.2) it is using [flex-based scanner in C for tokenization](https://github.com/github/linguist/pull/3846). Enry still uses [extract_token](https://github.com/github/linguist/pull/3846/files#diff-d5179df0b71620e3fac4535cd1368d15L60) regex-based algorithm. See [#193](https://github.com/src-d/enry/issues/193).
- Bayesian classifier can't distinguish "SQL" from "PLpgSQL. See [#194](https://github.com/src-d/enry/issues/194).