1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
" Autoloaded entry point function
function! paste_insert#() abort
" Set up an event table
augroup paste_insert
autocmd!
" Set up the paste and tell the user
autocmd User Start
\ call s:Start() | echo 'Paste ready'
" When starting insert mode, add completion hook for when we leave
autocmd InsertEnter *
\ autocmd paste_insert InsertLeave *
\ doautocmd paste_insert User Complete
" User waits too long in normal mode, timeout
autocmd CursorHold *
\ doautocmd paste_insert User Timeout
" User leaves the buffer or window, abort
autocmd BufLeave,WinLeave *
\ doautocmd paste_insert User Abort
" Exit condition reporting
autocmd User Abort
\ echo 'Paste aborted'
autocmd User Cancel
\ echo 'Paste cancelled'
autocmd User Complete
\ echo 'Paste completed'
autocmd User Timeout
\ echo 'Paste timeout'
" End the paste and clear the events table
autocmd User Abort,Cancel,Complete,Timeout
\ call s:Stop() | autocmd! paste_insert
augroup END
" Trigger the starting actions
doautocmd paste_insert User Start
endfunction
" Keys that cancel the pending paste in normal mode, defaults to Ctrl-C and
" Escape
let s:cancel = get(g:, 'paste_insert_cancel', ['<C-C>', '<Esc>'])
" Cache for the prior functions of those keys, in case the user has already
" mapped them
let s:maps = {}
function! s:MapArg(key, mode) abort
if v:version > 703 || v:version == 703 && has('patch-32')
return maparg(a:key, a:mode, 0, 1)
else
let rhs = maparg(a:key, a:mode)
if rhs ==# ''
return {}
else
return { 'rhs': rhs }
endif
endif
endfunction
" Start the paste: save each cancel key's prior function, remap it, set
" 'paste'
function! s:Start() abort
for key in s:cancel
let maps = []
try
let map = s:MapArg(key, 'n')
if !empty(map)
call add(maps, s:MapArg(key, 'n'))
endif
execute 'nunmap <buffer> '.key
let map = s:MapArg(key, 'n')
if !empty(map)
call add(maps, s:MapArg(key, 'n'))
endif
execute 'nunmap '.key
catch
endtry
if len(maps) == 2
let maps[0]['buffer'] = 1
endif
let s:maps[key] = maps
execute 'nnoremap '.key
\.' :<C-U>doautocmd paste_insert User Cancel<CR>'
endfor
set paste
endfunction
" Stop the paste: unset 'paste', restore prior function of cancel key
function! s:Stop() abort
set nopaste
for key in s:cancel
execute 'nunmap '.key
for map in reverse(s:maps[key])
let command = !has_key(map, 'noremap') || map['noremap']
\ ? ['nnoremap']
\ : ['nmap']
for flag in ['buffer', 'expr', 'nowait', 'silent']
if has_key(map, flag) && map[flag]
call add(command, '<'.flag.'>')
endif
endfor
call extend(command, [key, map['rhs']])
execute join(command)
endfor
unlet s:maps[key]
endfor
endfunction
|
