Online editor modifies newlines.
Summary
The online web editor modifies newlines, replace LF -> CRLF resulting in useless diffs.
This issue ise related to https://gitlab.com/gitlab-org/gitlab-foss/-/issues/1823 which is solved by setting core.autocrlf
to true
but it is not clear how to do this with Heptapod and mercurial.
See for example
https://hg.iscimath.org/forbes-group/wdata/-/commit/6779c1c18bd7627e1ac4236193efc5254ae0ac11
There is probably some configurational workarround, but it should be clearly documented as it is not at all obvious.