[Monotone-devel] Vimdiff 2 and 3-way merge support

[Matthew A. Nicholson]

Here is a patch to std_hooks.lua to add vimdiff support for 2 and 3 way merge. 
For the merge to work, the user must save all changes in the left-most file in 
the vim window. (they will also have to press enter to vim's prompt when it starts)
--
Matthew A. Nicholson
Digium

--- std_hooks.lua       2004-12-31 02:16:56.000000000 -0600
+++ ../mon/std_hooks.lua        2005-02-14 16:00:52.000000000 -0600
@@ -132,6 +132,16 @@
 
 -- merger support
 
+function merge2_vim_cmd(vim, lfile, rfile, outfile)
+   local cmd_fmt = "%s -d -c \"file %s\" \"%s\" \"%s\""
+   return string.format(cmd_fmt, vim, outfile, lfile, rfile)
+end
+
+function merge3_vim_cmd(vim, lfile, afile, rfile, outfile)
+   local cmd_fmt = "%s -d -c \"file %s\" \"%s\" \"%s\" \"%s\""
+   return string.format(cmd_fmt, vim, outfile, lfile, afile, rfile)
+end
+
 function merge2_emacs_cmd(emacs, lfile, rfile, outfile)
    local elisp = "'(ediff-merge-files \"%s\" \"%s\" nil \"%s\")'"
    local cmd_fmt = "%s -no-init-file -eval " .. elisp
@@ -211,6 +221,10 @@
          cmd = merge2_emacs_cmd("emacs", lfile, rfile, outfile)
       elseif program_exists_in_path("xemacs") then
          cmd = merge2_emacs_cmd("xemacs", lfile, rfile, outfile)
+      elseif program_exists_in_path("gvim") then
+         cmd = merge2_vim_cmd("gvim", lfile, rfile, outfile)
+      elseif program_exists_in_path("vim") then
+         cmd = merge2_vim_cmd("vim", lfile, rfile, outfile)
       end
 
       if cmd ~= nil
@@ -259,6 +273,10 @@
          cmd = merge3_emacs_cmd("emacs", lfile, afile, rfile, outfile)
       elseif program_exists_in_path("xemacs") then
          cmd = merge3_emacs_cmd("xemacs", lfile, afile, rfile, outfile)
+      elseif program_exists_in_path("gvim") then
+         cmd = merge3_vim_cmd("gvim", lfile, afile, rfile, outfile)
+      elseif program_exists_in_path("vim") then
+         cmd = merge3_vim_cmd("vim", lfile, afile, rfile, outfile)
       end
 
       if cmd ~= nil