Re: Mass rename of C++ .c files to .cc suffix?

[Jakub Jelinek <jakub@redhat.com>]

On Fri, Jan 07, 2022 at 11:25:50AM +0100, Martin Jambor wrote:
> Would anyone be terribly against mass renaming all *.c files (that are
> actually C++ files) within the gcc subdirectory to ones with .cc suffix?
> 
> We already have 47 files with suffix .cc directly in the gcc
> subdirectory and 160 if we also count those in (non-testsuite)
> subdirectories, while the majority of our non-header C++ files still has
> the .c suffix.
> 
> I have already missed stuff when grepping because I did not include *.cc
> files and the inconsistency is also just ugly and must be very confusing
> to anyone who encounters it for the first time.
> 
> Since we have switched to git, this should have quite small effect on
> anyone who does their development on branches.  With Martin Liška we did
> a few experiments and git blame, git rebase and even git gcc-backport
> worked seamlessly across a rename.
> 
> I would be fine waiting with it until GCC 12 gets released but see
> little value in doing so.
> 
> What do others think?  (Any important caveats I might have missed?)

My big worry would be backporting for the next 2 years.
Do we need to adjust commit messages when backporting to replace *.cc with
*.c in there?  Does git cherry-pick handle the changed files or do we
need to resolve conflicts manually?

	Jakub