Nitin Motiani <nitinmotiani@google.com> writes:
> I have updated the commit message. I also added another test for this
> scenario in v3.
I don't think this patch is ready. It is wasting code and cycles to
fix a nonexistent problem. We are working in a backend-safe encoding,
therefore it is not possible for one byte of a multibyte character to
match '\' (nor '_' nor '%'). So the existing logic that pays no
attention to multibyte boundaries is not wrong, and if it were then
the preceding loop that looks for the end of the literal-match
substring would also be wrong (as well as some hundreds of other
places that make similar assumptions).
This code does get consecutive-backslash cases wrong, and we need
to fix that, but we don't need to add complexity to fix something
that's not broken.
regards, tom lane
