diff options
Diffstat (limited to 'runtime/doc/map.txt')
| -rw-r--r-- | runtime/doc/map.txt | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/runtime/doc/map.txt b/runtime/doc/map.txt index cfd48b5a78..276ab50509 100644 --- a/runtime/doc/map.txt +++ b/runtime/doc/map.txt @@ -1,4 +1,4 @@ -*map.txt* For Vim version 8.2. Last change: 2020 Sep 09 +*map.txt* For Vim version 8.2. Last change: 2020 Oct 07 VIM REFERENCE MANUAL by Bram Moolenaar @@ -252,6 +252,17 @@ For abbreviations |v:char| is set to the character that was typed to trigger the abbreviation. You can use this to decide how to expand the {lhs}. You should not either insert or change the v:char. +In case you want the mapping to not do anything, you can have the expression +evaluate to an empty string. If something changed that requires Vim to +go through the main loop (e.g. to update the display), return "\<Ignore>". +This is similar to "nothing" but makes Vim return from the loop that waits for +input. Example: > + func s:OpenPopup() + call popup_create(... arguments ...) + return "\<Ignore>" + endfunc + nnoremap <expr> <F3> <Sid>OpenPopup() + Be very careful about side effects! The expression is evaluated while obtaining characters, you may very well make the command dysfunctional. For this reason the following is blocked: |