handling digits in flex mode

[2000jedi]

Consider the following pattern of integer literal when the -F flag is given:

0|[1-9][0-9]* { /* ... */}

re2rust fails with error unexpected character: '0'

it requires to add double quotes or character classes around the literal 0

[0]|[1-9][0-9]* { /* ... */}

Should this be a bug in flex mode

[skvadrik]

I'm not sure why digits were not allowed - probably just an oversight, as flex mode is not the primary one. They don't cause any grammar ambiguities, so I just added them: f2395c2.

[helly25]

This was certainly an oversight. Apparently we did not end up needing it despite the complex original use case (convert all flex usage in PHP with RE2C).

…

On Sat, Jul 20, 2024 at 12:04 AM Ulya Trofimovich ***@***.***> wrote: I'm not sure why digits were not allowed - probably just an oversight, as flex mode is not the primary one. They don't cause any grammar ambiguities, so I just added them: f2395c2 <f2395c2> . — Reply to this email directly, view it on GitHub <#483 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABQ7NSKZSJBNPE2SZA5QAI3ZNGEOJAVCNFSM6AAAAABLEY32Q2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDENBQGMZDMOBVGA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>