I'd think it would be easy to write a diff script in Perl to avoid platform dependencies. In fact the result would be simpler than Paul describes because instead of actually modifying logfiles the mods could be done in-memory by the script. Reading in two text files, strinpping off newlines, optionally changing \ to /, and comparing is pretty trivial.
On Tue, Oct 25, 2022 at 2:12 PM Paul Smith <psm...@gnu.org> wrote: > On Tue, 2022-10-25 at 19:37 +0300, Eli Zaretskii wrote: > > > A lot of these seem to be CRLF errors in the diff, where it would > > > otherwise match. I know that the test framework does some > > > manipulation of CRLF. > > > > If the test suite runs Diff, it should invoke it with the > > "--strip-trailing-cr" switch, I think. Because Cygwin's (and MSYS's) > > Diff doesn't use Windows text-mode I/O. > > OK I looked into the test suite to remind myself what it does. > > First it compares the base and the log file directly; if they are equal > we're done. If they're not equal we manipulate them by (a) converting > backslash to slash and (b) converting CRLF to LF, then we compare them > again. If they're now the same, declare victory. If they're still > different, then we invoke diff on the original versions. > > So if we see a difference it must be that there's some OTHER difference > not just CRLF. Or, the test suite comparison has a bug. I'll have to > look more closely at the output. > > I don't want to just add that diff switch because it's a GNU diff > switch and won't work on systems without GNU diff (BSD, etc.) If I > wanted to use it I'd need to first check that it was available. Which > could be done of course. > >
