editor: file created for diff action should have .diff suffix...
editor: file created for diff action should have .diff suffix
This is a follow-up to
https://phab.mercurial-scm.org/D464 (6e6452bc441d) that
introduced the new file extension behavior. It erroneously changed `.diff` to
`.diff.hg.txt`.
Test Plan:
Verified `make tests` passes, particularly `test-editor-filename.t`.
Differential Revision:
https://phab.mercurial-scm.org/D607