kernel/git - git - PowerEL Git System

Author	SHA1	Message	Date
Kevin Bracey	4549162e8d	mergetools/p4merge: create a base if none available Originally, with no base, Git gave P4Merge $LOCAL as a dummy base: p4merge "$LOCAL" "$LOCAL" "$REMOTE" "$MERGED" Commit `0a0ec7bd` changed this to: p4merge "empty file" "$LOCAL" "$REMOTE" "$MERGED" to avoid the problem of being unable to save in some circumstances with similar inputs. Unfortunately this approach produces much worse results on differing inputs. P4Merge really regards the blank file as the base, and once you have just a couple of differences between the two branches you end up with one a massive full-file conflict. The 3-way diff is not readable, and you have to invoke "difftool MERGE_HEAD HEAD" manually to get a useful view. The original approach appears to have invoked special 2-way merge behaviour in P4Merge that occurs only if the base filename is "" or equal to the left input. You get a good visual comparison, and it does not auto-resolve differences. (Normally if one branch matched the base, it would autoresolve to the other branch). But there appears to be no way of getting this 2-way behaviour and being able to reliably save. Having base==left appears to be triggering other assumptions. There are tricks the user can use to force the save icon on, but it's not intuitive. So we now follow a suggestion given in the original patch's discussion: generate a virtual base, consisting of the lines common to the two branches. This is the same as the technique used in resolve and octopus merges, so we relocate that code to a shared function. Note that if there are no differences at the same location, this technique can lead to automatic resolution without conflict, combining everything from the 2 files. As with the other merges using this technique, we assume the user will inspect the result before saving. Signed-off-by: Kevin Bracey <kevin@bracey.fi> Reviewed-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	12 years ago
Kevin Bracey	c699a7ccdc	mergetools/p4merge: swap LOCAL and REMOTE Reverse LOCAL and REMOTE when invoking P4Merge as a mergetool, so that the incoming branch is now in the left-hand, blue triangle pane, and the current branch is in the right-hand, green circle pane. This change makes use of P4Merge consistent with its built-in help, its reference documentation, and Perforce itself. But most importantly, it makes merge results clearer. P4Merge is not totally symmetrical between left and right; despite changing a few text labels from "theirs/ours" to "left/right" when invoked manually, it still retains its original Perforce "theirs/ours" viewpoint. Most obviously, in the result pane P4Merge shows changes that are common to both branches in green. This is on the basis of the current branch being green, as it is when invoked from Perforce; it means that lines in the result are blue if and only if they are being changed by the merge, making the resulting diff clearer. Note that P4Merge now shows "ours" on the right for both diff and merge, unlike other diff/mergetools, which always have REMOTE on the right. But observe that REMOTE is the working tree (ie "ours") for a diff, while it's another branch (ie "theirs") for a merge. Ours and theirs are reversed for a rebase - see "git help rebase". However, this does produce the desired "show the results of this commit" effect in P4Merge - changes that remain in the rebased commit (in your branch, but not in the new base) appear in blue; changes that do not appear in the rebased commit (from the new base, or common to both) are in green. If Perforce had rebase, they'd probably not swap ours/theirs, but make P4Merge show common changes in blue, picking out our changes in green. We can't do that, so this is next best. Signed-off-by: Kevin Bracey <kevin@bracey.fi> Reviewed-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	12 years ago
David Aguilar	d272c8497c	p4merge: fix printf usage Do not use a random string as if it is a format string for printf when showing it literally; instead feed it to '%s' format. Reported-by: Asheesh Laroia <asheesh@asheesh.org> Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	12 years ago
David Aguilar	950b5680bd	mergetools/p4merge: Honor $TMPDIR for the /dev/null placeholder Use $TMPDIR when creating the /dev/null placeholder for p4merge. This prevents users from finding a seemingly random untracked file in their worktree. This is different than what mergetool does with $LOCAL and $REMOTE because those files exist to aid users when resolving merges. p4merge's /dev/null placeholder is not helpful in that situation so it is sensible to keep it out of the worktree. Reported-by: Jeremy Morton <admin@game-point.net> Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	12 years ago
David Aguilar	3facc60031	mergetools/p4merge: Handle "/dev/null" p4merge does not properly handle the case where "/dev/null" is passed as a filename. Work it around by creating a temporary file for this purpose. Reported-by: Jeremy Morton <admin@game-point.net> Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> --- Needs to be amended with Tested-by when a report comes...	13 years ago
David Aguilar	bc7a96a896	mergetool--lib: Refactor tools into separate files Individual merge tools are now defined in a mergetools/$tool file which is sourced at runtime. The individual files are installed into $(git --exec-path)/mergetools/. New tools can be added by creating a new file instead of editing the git-mergetool--lib.sh scriptlet. http://thread.gmane.org/gmane.comp.version-control.git/134906/focus=135006 Signed-off-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>	14 years ago