Mercurial > vim
comparison runtime/doc/map.txt @ 24142:34acfef7f60c v8.2.2612
patch 8.2.2612: col('.') may get outdated column value
Commit: https://github.com/vim/vim/commit/18b7d86d7fa997bbb02a069dafacb32a0f73ca1e
Author: Bram Moolenaar <Bram@vim.org>
Date: Wed Mar 17 13:28:05 2021 +0100
patch 8.2.2612: col('.') may get outdated column value
Problem: col('.') may get outdated column value.
Solution: Add a note to the help how to make this work and add a test for
it. (closes #7971)
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Wed, 17 Mar 2021 13:30:03 +0100 |
| parents | 99ef85ff1af4 |
| children | 4ab4ef0c48b1 |
comparison
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| 24141:6e9204b17dca | 24142:34acfef7f60c |
|---|---|
| 260 func s:OpenPopup() | 260 func s:OpenPopup() |
| 261 call popup_create(... arguments ...) | 261 call popup_create(... arguments ...) |
| 262 return "\<Ignore>" | 262 return "\<Ignore>" |
| 263 endfunc | 263 endfunc |
| 264 nnoremap <expr> <F3> <Sid>OpenPopup() | 264 nnoremap <expr> <F3> <Sid>OpenPopup() |
| 265 | |
| 266 Also, keep in mind that the expression may be evaluated when looking for | |
| 267 typeahead, before the previous command has been executed. For example: > | |
| 268 func StoreColumn() | |
| 269 let g:column = col('.') | |
| 270 return 'x' | |
| 271 endfunc | |
| 272 nnoremap <expr> x StoreColumn() | |
| 273 nmap ! f!x | |
| 274 You will notice that g:column has the value from before executing "fx", | |
| 275 because "z" is evaluated before "fx" is executed. | |
| 276 This can be solved by inserting <Ignore> before the character that is | |
| 277 expression-mapped: > | |
| 278 nmap ! f!<Ignore>x | |
| 265 | 279 |
| 266 Be very careful about side effects! The expression is evaluated while | 280 Be very careful about side effects! The expression is evaluated while |
| 267 obtaining characters, you may very well make the command dysfunctional. | 281 obtaining characters, you may very well make the command dysfunctional. |
| 268 For this reason the following is blocked: | 282 For this reason the following is blocked: |
| 269 - Changing the buffer text |textlock|. | 283 - Changing the buffer text |textlock|. |