Hello everyone,
in short:
* Partial flex syntax support (enabled with '-F' option) causes
ambiguity in re2c grammar and introduces parsing conflicts.
* These conflicts are mitigated in '-c' mode, so the one major user of
'-F' that I know of (PHP team) didn't notice them until now.
However, they lead to severe parsing failures in normal mode.
* There's a couple of ways to fix the problem, but all of them have
major downsides (mostly backwards compatibility breaks).
Please read the full analyses
<https://github.com/skvadrik/re2c/issues/115>and tell what you think.
Ulya
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