revset: flatten chained 'list' operations (aka function args) (issue5072) Internal _matchfiles() function can take bunch of arguments, which would lead to a maximum recursion depth error. This patch avoids the excessive stack use by flattening 'list' nodes beforehand. Since getlist() no longer takes a nested 'list' nodes, _parsealiasdecl() also needs to flatten argument list, "aliasname($1, $2, ...)".

help: fix typo in backgroundclose documentation

revert: makes interactive mode ask to forget added files (issue4936) Before this patch revert interactive mode unconditionally forgets added files. This patch fixes this by asking user if he wants to forget added file. If user doesn't want to forget given file, it is added to matcher_opts exclude list, to not reviewing it later with other modified files.

obsolete: fix n^2 marker computation behavior Previously, if you ran obsolete.createmarkers with a bunch of markers that did not have successors (like when you do a prune), it encountered a n^2 computation behavior because the loop would read the changelog (to get ctx.parents()), then add a marker, in a loop. Adding a marker invalidated the computehidden cache, and reading the changelog recomputed it. This resulted in pruning 150 commits taking 150+ seconds in a large repo. The fix is to break the reading part of the loop to be separate from the writing part.