bug#41687: regex search for indexed files

[Peng Yu]

Hi,

grep can do regex search but it needs to scan each file. When the
number of files are large, it can be slow.

Is there an alternative tool that can do regex search in the indexed
files (including .docx .pdf and other commonly used file formats that
can be converted to text) so that the search can be fast?

I see this. But it is too old and doesn't support formats like pdf and docx.

https://github.com/google/codesearch

-- 
Regards,
Peng