Use a smaller font for vimdiff

Please review this tip:

This tip was imported from vim.org and needs general review.
You might clean up comments or merge similar tips.
Add suitable categories so people can find the tip.
Please avoid the discussion page (use the Comments section below for notes).
If the tip contains good advice for current Vim, remove the {{review}} line.

Tip 824 Printable Monobook Previous Next

created November 19, 2004 · complexity basic · author Pan Shizhu · version 6.0

I want to change the font when Vim is launched in vimdiff mode, since you'll not be able to change the font later while retaining the 1:1 split, (in other cases, I can change the font before :diffs).

Just add something like the following in gvimrc. Of course, your fonts may vary.

" Font must be set in gvimrc
let in_diff_mode = 0
windo let in_diff_mode = in_diff_mode + &l:diff
set guifont=Lucida_Console:h15:cDEFAULT
" In diff mode
if in_diff_mode == 1
  set guifont=isi_ansi:h14:cDEFAULT
endif
unlet in_diff_mode

Comments[]

"Here are some settings for diff mode, the colors are troublesome.
if &diff
  set diffopt=filler,iwhite,icase,context:6
  ":windo! set wrap
  " hi diffchange ctermbg=0 .. is black on unix
  hi diffchange term=NONE ctermbg=3 ctermfg=5
  hi diffdelete term=NONE ctermbg=0
  hi diffadd term=NONE ctermbg=1 ctermfg=15
  if $TERM =~ "xterm"
    hi diffchange ctermbg=8 ctermfg=1
    hi difftext ctermbg=8 ctermfg=7
    hi diffadd ctermbg=8 ctermfg=11
  endif
endif

Is there any reason not to test for the value of &l:diff directly? In my gvimrc the following lines seem to work:

if &l:diff
  set guifont=Monaco:h9
else
  set guifont=Monaco:h11
endif

I have been looking for information on how to set the font size to much larger on a MacOSX installation of Vim.app.

This worked finally:

set guifont=Monaco:h18