[PATCH v3 0/7] mergetools: vimdiff: regression fixes and improvements

Hello,

I wrote vimdiff3 to leverage both the power of git's diff3 and vim's diff mode, but commit 0041797449 broke that.

Here you can see how it used to work:

https://i.snipboard.io/hSdfkj.jpg

The added and changed lines are properly highlighted.

After I fix the conflicts vim still properly highlights which lines were changed, and even what specific characters were modified:

https://i.snipboard.io/HvpULI.jpg

Now I get absolutely nothing:

https://i.snipboard.io/HXMui4.jpg

Additionally, every time I run the command I get an annoying message:

  "./content_LOCAL_8975" 6L, 28B
  "./content_BASE_8975" 6 lines, 29 bytes
  "./content_REMOTE_8975" 6 lines, 29 bytes
  "content" 16 lines, 115 bytes
  Press ENTER or type command to continue

Because that's what `bufdo` does.

Since v2 there's a lot more reorganization in order to deal with cases Fernando Ramos mentioned.

Felipe Contreras (7):
  mergetools: vimdiff: fix comment
  mergetools: vimdiff: make vimdiff3 actually work
  mergetools: vimdiff: silence annoying messages
  mergetools: vimdiff: fix for diffopt
  mergetools: vimdiff: fix single window layouts
  mergetools: vimdiff: rework tab logic
  mergetools: vimdiff: restore selective diff mode

 mergetools/vimdiff | 96 ++++++++++++++++++++++------------------------
 1 file changed, 45 insertions(+), 51 deletions(-)

Range-diff against v2:
 1:  20c5abdbc8 =  1:  20c5abdbc8 mergetools: vimdiff: fix comment
 2:  e6c860d2be <  -:  ---------- mergetools: vimdiff: shuffle single window case
 3:  bdf1e919a5 <  -:  ---------- mergetools: vimdiff: add get_buf() helper
 4:  c5e21e3049 <  -:  ---------- mergetools: vimdiff: make vimdiff3 actually work
 5:  2bf45c882d <  -:  ---------- mergetools: vimdiff: silence annoying messages
 6:  77a67628e7 <  -:  ---------- mergetools: vimdiff: fix for diffopt
 7:  adc9d18f2b <  -:  ---------- mergetools: vimdiff: cleanup cruft
 8:  fe7fb1a018 <  -:  ---------- mergetools: vimdiff: fix single window mode
 9:  15765aa9d2 <  -:  ---------- mergetools: vimdiff: use vimdiff for vimdiff3
 -:  ---------- >  2:  8d466e06aa mergetools: vimdiff: make vimdiff3 actually work
 -:  ---------- >  3:  95bfab5813 mergetools: vimdiff: silence annoying messages
 -:  ---------- >  4:  08f6b2bce2 mergetools: vimdiff: fix for diffopt
 -:  ---------- >  5:  2bff74f499 mergetools: vimdiff: fix single window layouts
 -:  ---------- >  6:  39e8277317 mergetools: vimdiff: rework tab logic
 -:  ---------- >  7:  92df35208d mergetools: vimdiff: restore selective diff mode