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author | Bram Moolenaar <Bram@vim.org> | 2021-03-17 13:28:05 +0100 |
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committer | Bram Moolenaar <Bram@vim.org> | 2021-03-17 13:28:05 +0100 |
commit | 18b7d86d7fa997bbb02a069dafacb32a0f73ca1e (patch) | |
tree | 31c279c6d747651f0bcaae89d24b5ecb2ec8163f /runtime | |
parent | f8c52e8d08de3fdf48db877d7d53d2d68c6ceb7b (diff) |
patch 8.2.2612: col('.') may get outdated column valuev8.2.2612
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 may get outdated column value.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)
Diffstat (limited to 'runtime')
-rw-r--r-- | runtime/doc/map.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/runtime/doc/map.txt b/runtime/doc/map.txt index bf391305dc..873d5d6d7a 100644 --- a/runtime/doc/map.txt +++ b/runtime/doc/map.txt @@ -263,6 +263,20 @@ input. Example: > endfunc nnoremap <expr> <F3> <Sid>OpenPopup() +Also, keep in mind that the expression may be evaluated when looking for +typeahead, before the previous command has been executed. For example: > + func StoreColumn() + let g:column = col('.') + return 'x' + endfunc + nnoremap <expr> x StoreColumn() + nmap ! f!x +You will notice that g:column has the value from before executing "fx", +because "z" is evaluated before "fx" is executed. +This can be solved by inserting <Ignore> before the character that is +expression-mapped: > + nmap ! f!<Ignore>x + 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: |