214 lines
7.3 KiB
VimL
214 lines
7.3 KiB
VimL
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if exists('g:loaded_signify') || !executable('git') || &cp
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finish
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endif
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let g:loaded_signify = 1
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" Default values {{{1
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let s:line_highlight_b = 0
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let s:colors_set_b = 0
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let s:active_buffers = {}
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let s:id_start = 0x100
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let s:id_top = s:id_start
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let s:id_jump = s:id_start
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" Default mappings {{{1
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if exists('g:signify_mapping_next_change')
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exe 'nnoremap '. g:signify_mapping_next_change .' :SignifyJumpToNextChange<cr>'
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else
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nnoremap <leader>gn :SignifyJumpToNextChange<cr>
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endif
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if exists('g:signify_mapping_prev_change')
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exe 'nnoremap '. g:signify_mapping_prev_change .' :SignifyJumpToPrevChange<cr>'
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else
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nnoremap <leader>gp :SignifyJumpToPrevChange<cr>
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endif
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if exists('g:signify_mapping_toggle_highlight')
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exe 'nnoremap '. g:signify_mapping_toggle_highlight .' :SignifyToggleHighlight<cr>'
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else
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nnoremap <leader>gh :SignifyToggleHighlight<cr>
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endif
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if exists('g:signify_mapping_toggle')
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exe 'nnoremap '. g:signify_mapping_toggle .' :SignifyToggle<cr>'
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else
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nnoremap <leader>gt :SignifyToggle<cr>
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endif
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" Default signs {{{1
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if exists('g:signify_option_sign_add')
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exe 'sign define SignifyAdd text='. g:signify_option_sign_add .' texthl=SignifyAdd linehl=none'
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else
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sign define SignifyAdd text=>> texthl=SignifyAdd linehl=none
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endif
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if exists('g:signify_option_sign_delete')
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exe 'sign define SignifyDelete text='. g:signify_option_sign_delete .' texthl=SignifyDelete linehl=none'
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else
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sign define SignifyDelete text=<< texthl=SignifyDelete linehl=none
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endif
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if exists('g:signify_option_sign_change')
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exe 'sign define SignifyChange text='. g:signify_option_sign_change .' texthl=SignifyChange linehl=none'
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else
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sign define SignifyChange text=!! texthl=SignifyChange linehl=none
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endif
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" Initial stuff {{{1
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aug signify
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au!
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au ColorScheme * call s:set_colors()
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au BufWritePost,BufEnter * call s:start()
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au BufDelete * call s:stop() | call remove(s:active_buffers, expand('%:p'))
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aug END
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com! -nargs=0 -bar SignifyToggle call s:toggle_signify()
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com! -nargs=0 -bar SignifyToggleHighlight call s:toggle_line_highlighting()
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com! -nargs=0 -bar SignifyJumpToNextChange call s:jump_to_next_change()
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com! -nargs=0 -bar SignifyJumpToPrevChange call s:jump_to_prev_change()
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" Internal functions {{{1
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" Functions -> s:start() {{{2
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function! s:start() abort
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let l:path = expand('%:p')
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" New buffer.. add to list.
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if !has_key(s:active_buffers, l:path)
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let s:active_buffers[l:path] = 1
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" Inactive buffer.. bail out.
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elseif get(s:active_buffers, l:path) == 0
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return
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endif
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" Is a diff available?
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let s:diff = system('git diff --no-ext-diff -U0 '. fnameescape(l:path) .'| grep "^@@ "')
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if v:shell_error
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sign unplace *
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return
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endif
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" Set colors only for the first time or when a new colorscheme is set.
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if !s:colors_set_b
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call s:set_colors()
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let s:colors_set_b = 1
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endif
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" Use git's diff cmd to set our signs.
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call s:process_diff(s:diff)
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endfunction
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" Functions -> s:stop() {{{2
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function! s:stop() abort
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sign unplace *
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aug signify
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au! * <buffer>
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aug END
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let s:active_buffers[expand('%:p')] = 0
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endfunction
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" Functions -> s:toggle_signify() {{{2
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function! s:toggle_signify() abort
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let l:path = expand('%:p')
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if has_key(s:active_buffers, l:path) && get(s:active_buffers, l:path) == 1
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call s:stop()
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let s:active_buffers[l:path] = 0
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echom 'signify: stopped!'
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else
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let s:active_buffers[l:path] = 1
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call s:start()
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echom 'signify: started!'
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endif
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endfunction
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" Functions -> s:set_colors() {{{2
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func! s:set_colors() abort
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if has('gui_running')
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let guibg = synIDattr(hlID('LineNr'), 'bg', 'gui')
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if empty(guibg)
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hi SignifyAdd gui=bold guifg=#11ee11
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hi SignifyDelete gui=bold guifg=#ee1111
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hi SignifyChange gui=bold guifg=#eeee11
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else
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exe 'hi SignifyAdd gui=bold guifg=#11ee11 guibg='. guibg
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exe 'hi SignifyDelete gui=bold guifg=#ee1111 guibg='. guibg
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exe 'hi SignifyChange gui=bold guifg=#eeee11 guibg='. guibg
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endif
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else
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let ctermbg = synIDattr(hlID('LineNr'), 'bg', 'cterm')
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if empty(ctermbg)
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hi SignifyAdd cterm=bold ctermfg=2
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hi SignifyDelete cterm=bold ctermfg=1
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hi SignifyChange cterm=bold ctermfg=3
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else
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exe 'hi SignifyAdd cterm=bold ctermfg=2 ctermbg='. ctermbg
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exe 'hi SignifyDelete cterm=bold ctermfg=1 ctermbg='. ctermbg
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exe 'hi SignifyChange cterm=bold ctermfg=3 ctermbg='. ctermbg
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endif
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endif
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endfunc
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" Functions -> s:process_diff() {{{2
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function! s:process_diff(diff) abort
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sign unplace *
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let s:id_top = s:id_start
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" Determine where we have to put our signs.
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for line in split(a:diff, '\n')
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" Parse diff output.
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let tokens = matchlist(line, '\v^\@\@ -(\d+),?(\d*) \+(\d+),?(\d*)')
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if empty(tokens)
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echoerr 'signify: Could not parse this line "'. line .'"'
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endif
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let [ old_line, old_count, new_line, new_count ] = [ str2nr(tokens[1]), (tokens[2] == '') ? 1 : str2nr(tokens[2]), str2nr(tokens[3]), (tokens[4] == '') ? 1 : str2nr(tokens[4]) ]
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" A new line was added.
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if (old_count == 0) && (new_count >= 1)
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let offset = 0
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while offset < new_count
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exe 'sign place '. s:id_top .' line='. (new_line + offset) .' name=SignifyAdd file='. expand('%:p')
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let [ offset, s:id_top ] += [ 1, 1 ]
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endwhile
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" An old line was removed.
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elseif (old_count >= 1) && (new_count == 0)
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exe 'sign place '. s:id_top .' line='. old_line .' name=SignifyDelete file='. expand('%:p')
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let s:id_top += 1
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" A line was changed.
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else
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let offset = 0
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while offset < new_count
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exe 'sign place '. s:id_top .' line='. (new_line + offset) .' name=SignifyChange file='. expand('%:p')
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let [ offset, s:id_top ] += [ 1, 1 ]
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endwhile
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endif
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endfor
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endfunction
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" Functions -> s:toggle_line_highlighting() {{{2
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function! s:toggle_line_highlighting() abort
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if s:line_highlight_b
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sign define SignifyAdd text=+ texthl=SignifyAdd linehl=none
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sign define SignifyChange text=* texthl=SignifyChange linehl=none
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sign define SignifyDelete text=- texthl=SignifyDelete linehl=none
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let s:line_highlight_b = 0
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else
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sign define SignifyAdd text=+ texthl=SignifyAdd linehl=DiffAdd
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sign define SignifyChange text=* texthl=SignifyChange linehl=DiffChange
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sign define SignifyDelete text=- texthl=SignifyRemove linehl=DiffDelete
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let s:line_highlight_b = 1
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endif
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call s:start()
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endfunction
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" Functions -> s:jump_to_next_change() {{{2
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function! s:jump_to_next_change()
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exe 'sign jump '. s:id_jump .' file='. expand('%:p')
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let s:id_jump = ((s:id_jump + 1) == s:id_top) ? (s:id_start) : (s:id_jump + 1)
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endfunction
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" Functions -> s:jump_to_prev_change() {{{2
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function! s:jump_to_prev_change()
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exe 'sign jump '. s:id_jump .' file='. expand('%:p')
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let s:id_jump = (s:id_jump == s:id_start) ? (s:id_top - 1) : (s:id_jump - 1)
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endfunction
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