histedit: backout changeset 6f0b7475cf9a Before 6f0b7475cf9a, histedit (like rebase) was only creating markers on final success from the old-rewritten node to the newly created nodes (as of before 6f0b7475cf9a). In case of abort the aborted attempt were stripped to restore the repository in its state prior to the attempt. This use of strip was on purpose. Using markers in this case introduces various issues. The main one is that keeping the partial result of histedit as obsolete prevents us to recreates the same nodes in a second attempt. The same operation will lead to an identical results, using an identical node that already exists in the repository as obsolete. To conclude, we cannot and should not switch to obsolescence markers creation on histedit --abort and we backout 6f0b7475cf9a. A test to catch this class of issue will be introduced in the next changeset.

histedit: backout changeset 2b599f5468a4 Its parent is about to be backedout so this one needs to be removed too.

revsetlang: fix _quote on int on python3 Thanks to Yuya for spotting the need.

runtests: unset editor and pager related environment variables Those environment variables could affect some configuration and future tests. Drop them to avoid issues.

debugfsinfo: improve case-sensitive testing Previously the case-sensitive test was for the current directory, and is fragile with errors, and could remove a real file called ".debugfsinfo". This patch improves the case-sensitive testing so it test the given path using a unique temporary file, and does not crash on errors.

debugfsinfo: show fstype for given path