lexer: fixes for regex literal parsing

 - Ensure that regexp extension escapes are consistently handled;
   substitute `\d`, `\D`, `\s`, `\S`, `\w` and `\W` with `[[:digit:]]`,
   `[^[:digit:]]`, `[[:space:]]`, `[^[:space:]]`, `[[:alnum:]_]` and
   `[^[:alnum:]_]` character classes respectively since not all POSIX
   regexp implementations implement all of those extensions
 - Preserve `\b`, `\B`, `\<` and `\>` boundary matches

Fixes: a45f2a3 ("lexer: improve regex literal handling")
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

0 files changed, 0 insertions, 0 deletions