contrib/vim/hg-menu.vim

scmutil: move construction of instability count message to separate fn

When the commad we are running, introduces new instabilities, we show a message
like `5 new orphan changesets`, `2 new content-divergent changesets`, `1 new
phase-divergent changesets` etc which is very nice.

Now taking a step ahead, we want users to show how to fix them too. Something
like:

`5 new orphan changesets (run 'hg evolve' to resolve/stabilize them)`
`2 new content-divergent changesets (run 'hg evolve --content-divergent' to
resolve them)`

and maybe telling user a way to understand more about those new instabilities
like `hg evolve --list` or `hg log -r 'orphan()'` something like that.

The idea came from issue5855 which I want to fix because fixing that will result
in a nice UI.

Taking the construction logic out will allow extensions like evolve (maybe
rebase too) to wrap that and add information about how to resolve and how to
understand the instability more.

Differential Revision: https://phab.mercurial-scm.org/D3734

" vim600: set foldmethod=marker:
" =============================================================================
"  Name Of File: hg-menu.vim
"   Description: Interface to Mercurial Version Control.
"        Author: Steve Borho (modified Jeff Lanzarotta's RCS script)
"          Date: Wednesday, October 5, 2005
"       Version: 0.1.0
"     Copyright: None.
"         Usage: These command and gui menu displays useful hg functions
" Configuration: Your hg executable must be in your path.
" =============================================================================

" Section: Init {{{1
if exists("loaded_hg_menu")
  finish
endif
let loaded_hg_menu = 1

" Section: Menu Options {{{1
if has("gui")
"  amenu H&G.Commit\ File<Tab>,ci :!hg commit %<CR>:e!<CR>
"  amenu H&G.Commit\ All<Tab>,call :!hg commit<CR>:e!<CR>
"  amenu H&G.-SEP1-        <nul>
  amenu H&G.Add<Tab>\\add :!hg add %<CR><CR>
  amenu H&G.Forget\ Add<Tab>\\fgt :!hg forget %<CR><CR>
  amenu H&G.Show\ Differences<Tab>\\diff :call ShowResults("FileDiff", "hg\ diff")<CR><CR>
  amenu H&G.Revert\ to\ Last\ Version<Tab>\\revert :!hg revert %<CR>:e!<CR>
  amenu H&G.Show\ History<Tab>\\log :call ShowResults("FileLog", "hg\ log")<CR><CR>
  amenu H&G.Annotate<Tab>\\an :call ShowResults("annotate", "hg\ annotate")<CR><CR>
  amenu H&G.-SEP1-        <nul>
  amenu H&G.Repo\ Status<Tab>\\stat :call ShowResults("RepoStatus", "hg\ status")<CR><CR>
  amenu H&G.Pull<Tab>\\pull :!hg pull<CR>:e!<CR>
  amenu H&G.Update<Tab>\\upd :!hg update<CR>:e!<CR>
endif

" Section: Mappings {{{1
if(v:version >= 600)
  " The default Leader is \ 'backslash'
  map <Leader>add       :!hg add %<CR><CR>
  map <Leader>fgt       :!hg forget %<CR><CR>
  map <Leader>diff      :call ShowResults("FileDiff", "hg\ diff")<CR><CR>
  map <Leader>revert    :!hg revert %<CR>:e!<CR>
  map <Leader>log       :call ShowResults("FileLog", "hg\ log")<CR><CR>
  map <Leader>an        :call ShowResults("annotate", "hg\ annotate")<CR><CR>
  map <Leader>stat      :call ShowResults("RepoStatus", "hg\ status")<CR><CR>
  map <Leader>upd       :!hg update<CR>:e!<CR>
  map <Leader>pull      :!hg pull<CR>:e!<CR>
else
  " pre 6.0, the default Leader was a comma
  map ,add          :!hg add %<CR><CR>
  map ,fgt          :!hg forget %<CR><CR>
  map ,diff         :call ShowResults("FileDiff", "hg\ diff")<CR><CR>
  map ,revert       :!hg revert<CR>:e!<CR>
  map ,log          :call ShowResults("FileLog", "hg\ log")<CR><CR>
  map ,an           :call ShowResults("annotate", "hg\ annotate")<CR><CR>
  map ,stat         :call ShowResults("RepoStatus", "hg\ status")<CR><CR>
  map ,upd          :!hg update<CR>:e!<CR>
  map ,pull         :!hg pull<CR>:e!<CR>
endif

" Section: Functions {{{1
" Show the log results of the current file with a revision control system.
function! ShowResults(bufferName, cmdName)
  " Modify the shortmess option:
  " A  don't give the "ATTENTION" message when an existing swap file is
  "    found.
  set shortmess+=A

  " Get the name of the current buffer.
  let currentBuffer = bufname("%")

  " If a buffer with the name rlog exists, delete it.
  if bufexists(a:bufferName)
    execute 'bd! ' a:bufferName
  endif

  " Create a new buffer.
  execute 'new ' a:bufferName

  " Execute the command.
  execute 'r!' a:cmdName ' ' currentBuffer

  " Make is so that the file can't be edited.
  setlocal nomodified
  setlocal nomodifiable
  setlocal readonly

  " Go to the beginning of the buffer.
  execute "normal 1G"

  " Restore the shortmess option.
  set shortmess-=A
endfunction