meld:master commits

Add button "Unstage" to version control context menu See merge request !130

This is difficult to phrase in a way that isn't very Git-specific, but I feel like this is slightly clearer.

If a newly-added file has been staged, the unstage command is also the correct way to revert that change.

While reusing icons like this isn't ideal, it's better than not having anything. We need to (possibly in a GTK 4 port) add an actual version control icon set.

There's no good reason to reset to the top of the tree if we've been passed a sub-tree to run the scan on; we can just use whatever tree path we've been given.

This caused a very round-about bug where file status was not updated in tabs that came after a new comparison tab.

The code path handling single-file VC opens remains a weird one. The fix here is to not reach the point of doing a full scan by erroring out when the user tries to open a missing file, rather than assuming that they want a full VC scan.

FileDiff: fix file descriptor leak (#885) See merge request !131

Add Brazilian Portuguese translation for help files See merge request !132

When a FileDiff tab starts it creates 6 pipes via CachedSequenceMatcher. They are never released. Eventually the process runs out of file descriptors (typically 1024 on linux). Introduced in commit 8ed5befe Sat Mar 20 09:37:50 2021 filediff, matchers.helpers: Improve matcher process clean up (#565)

Add support for relocatable application bundle See merge request !129

The application bundle is relocatable, so the data locations must be set at runtime.

There's no good reason this should happen, but rather than crashing here we can reasonably just skip it, given that we've already logged an error to the console, and that this is only either a selection marker or a newest-file indicator.

We already had this handling for file comparisons; it was just missed for the other views.

We want to use these for tab switching instead of horizontal scroll, since that's a much more useful activity in Meld in general. Also, we've had that as the documented and used shortcut for ages now, so I'm not willing to change it. The effect here is that instead of these shortcuts working sometimes (i.e., in file comparisons, or in folder/VC comparisons when you didn't have the treeview focused) they should now work consistently.

If the user opened a file in an existing comparison that would change the shared-parent calculation, PathLabel didn't handle the change and refused to set its path because the new path didn't match the calculated parent. Ideally PathLabel would figure out the parent situation itself, but that requires PathLabel widgets knowing about each other, and that's a bigger change than this.