Merge pull request #121 from jsit/popup-delay-v2

* Add popup delay option
* Add popup delay documentation

README.md

@@ -51,6 +51,15 @@ inoremap <silent><expr> <TAB>
 inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"
 ```
 
+### Popup delay
+By default asyncomplete will show the autocomplete popup menu after a 30ms
+delay. Change this value to cause the popup to show more or less quickly between
+keystrokes.
+
+```vim
+let g:asyncomplete_popup_delay = 30
+```
+
 ### Remove duplicates
 
 If you have many sources enabled (especially the buffer source), it might be

autoload/asyncomplete.vim

@@ -333,7 +333,7 @@ function! s:update_pum() abort
         unlet s:update_pum_timer
     endif
     call asyncomplete#log('core', 's:update_pum')
-    let s:update_pum_timer = timer_start(30, function('s:recompute_pum'))
+    let s:update_pum_timer = timer_start(g:asyncomplete_popup_delay, function('s:recompute_pum'))
 endfunction
 
 function! s:recompute_pum(...) abort

doc/asyncomplete.txt

@@ -35,6 +35,13 @@ g:asyncomplete_log_file                               *g:asyncomplete_log_file*
 
     Path to log file.
 
+g:asyncomplete_popup_delay                         *g:asyncomplete_popup_delay*
+
+    Type: |Number|
+    Default: 30
+
+    Milliseconds to wait before opening the popup menu
+
 g:asyncomplete_auto_completeopt                       *g:asyncomplete_auto_completeopt*
 
     Type: |Number|

plugin/asyncomplete.vim

@@ -16,6 +16,7 @@ let g:asyncomplete_triggers = get(g:, 'asyncomplete_triggers', {'*': ['.', '>',
 
 let g:asyncomplete_auto_completeopt = get(g:, 'asyncomplete_auto_completeopt', 1)
 let g:asyncomplete_auto_popup = get(g:, 'asyncomplete_auto_popup', 1)
+let g:asyncomplete_popup_delay = get(g:, 'asyncomplete_popup_delay', 30)
 let g:asyncomplete_log_file = get(g:, 'asyncomplete_log_file', '')
 
 inoremap <silent> <expr> <Plug>(asyncomplete_force_refresh) asyncomplete#force_refresh()