[Text.Regex] incorrect word boundary ("\\b") substitutions. Bug in regex-compat's subRegex handling of BOL flags.
Consider:
import Text.Regex
main = putStrLn $ subRegex (mkRegex "\\b(.)") "abcdef" "|\\1"This outputs "|a|b|c|d|e|f", while it really should output "|abcdef" (at least according to Perl and Ruby).
Trac metadata
| Trac field | Value |
|---|---|
| Version | 6.8.3 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | libraries (other) |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | Unknown |
| Architecture | x86_64 (amd64) |
Edited by ChrisKuklewicz