git/mergetools at e56181060e1117d458b854c34e63206117dab8b6 - git

Tree: e56181060e

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
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araxis	…
bc3	…
codecompare	Add Code Compare v2.80.4 as a merge / diff tool for Windows	12 years ago
deltawalker	…
diffuse	…
ecmerge	…
emerge	…
gvimdiff	mergetools: simplify how we handle "vim" and "defaults"	12 years ago
gvimdiff2	mergetools: simplify how we handle "vim" and "defaults"	12 years ago
kdiff3	…
kompare	…
meld	…
opendiff	…
p4merge	mergetools/p4merge: create a base if none available	12 years ago
tkdiff	…
tortoisemerge	mergetools: teach tortoisemerge to handle filenames with SP correctly	12 years ago
vimdiff	mergetools: simplify how we handle "vim" and "defaults"	12 years ago
vimdiff2	mergetools: simplify how we handle "vim" and "defaults"	12 years ago
xxdiff	…