On 14/12/2020 11:29, Andrea Corallo via Gcc-patches wrote:
Hi all, I've committed the attached patch as obvious. This is to set `fill-column' to 80 in c-mode (Emacs default it to 70) so now M-q does the right thing. I think is very handy especially in comments. Question: should we update the copyright manually for this file or have it updated by 'update-copyright.py'? I think this is not scanning the root of the repo. Thanks Andrea
Sorry for the very late reply to this, but I've only just tracked it down as the cause of why emacs had suddenly started to produce lines that were displaying with a line wrap (I'd add an image, but the mailing list would likely only strip it off).
The problem is that this allows a character to appear in column 80 and emacs then automatically inserts a blank line after it (when the window is 80 columns wide), which really messes up the formatting.
The wiki seems to suggest https://gcc.gnu.org/wiki/FormattingCodeForGCC that the line length should be 79 columns (see the textwidth setting); although that is not what is set contrib/vimrc.
Would anyone object if we reduced this by 1 (to 79) in both places? R.
