aniani/vim
0
0
Fork 1
mirror of https://github.com/vim/vim.git synced 2025-07-26 11:04:33 -04:00
Code

runtime(doc): Fix style in fold.txt

Browse Source 
closes: #16236

Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: h-east <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
h-east 2024-12-17 20:48:42 +01:00 committed by Christian Brabandt
parent 38281e1b96
commit a977883ef3
No known key found for this signature in database
GPG Key ID: F3F92DA383FDDE09
1 changed files with 20 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
runtime/doc/fold.txt
View File

@ -1,4 +1,4 @@
*fold.txt* For Vim version 9.1. Last change: 2024 Dec 16 *fold.txt* For Vim version 9.1. Last change: 2024 Dec 17
VIM REFERENCE MANUAL by Bram Moolenaar VIM REFERENCE MANUAL by Bram Moolenaar
@ -106,7 +106,8 @@ The result of foldexpr then determines the fold level as follows:
"<1", "<2", .. a fold with this level ends at this line "<1", "<2", .. a fold with this level ends at this line
">1", ">2", .. a fold with this level starts at this line ">1", ">2", .. a fold with this level starts at this line
The result values "=", "s" and "a" are more expensive, please see |fold-expr-slow|. The result values "=", "s" and "a" are more expensive, please see
|fold-expr-slow|.
It is not required to mark the start (end) of a fold with ">1" ("<1"), a fold It is not required to mark the start (end) of a fold with ">1" ("<1"), a fold
will also start (end) when the fold level is higher (lower) than the fold will also start (end) when the fold level is higher (lower) than the fold
@ -146,7 +147,7 @@ end in that line.
It may happen that folds are not updated properly. You can use |zx| or |zX| It may happen that folds are not updated properly. You can use |zx| or |zX|
to force updating folds. to force updating folds.
Minimizing Computational Cost *fold-expr-slow* MINIMIZING COMPUTATIONAL COST *fold-expr-slow*
Due to its computational cost, this fold method can make Vim unresponsive, Due to its computational cost, this fold method can make Vim unresponsive,
especially when the fold level of all lines have to be initially computed. especially when the fold level of all lines have to be initially computed.
@ -154,13 +155,15 @@ Afterwards, after each change, Vim restricts the computation of foldlevels
to those lines whose fold level was affected by it (and reuses the known to those lines whose fold level was affected by it (and reuses the known
foldlevels of all the others). foldlevels of all the others).
The fold expression should therefore strive to minimize the number of dependent The fold expression should therefore strive to minimize the number of
lines needed for the computation of a given line: For example, try to avoid the dependent lines needed for the computation of a given line: For example, try
"=", "a" and "s" return values, because these will require the evaluation of the to avoid the "=", "a" and "s" return values, because these will require the
fold levels on previous lines until an independent fold level is found. evaluation of the fold levels on previous lines until an independent fold
level is found.
If this proves difficult, the next best thing could be to cache all fold levels If this proves difficult, the next best thing could be to cache all fold
in a buffer-local variable (b:foldlevels) that is only updated on |b:changedtick|: levels in a buffer-local variable (b:foldlevels) that is only updated on
|b:changedtick|:
>vim >vim
vim9script vim9script
def MyFoldFunc(): number def MyFoldFunc(): number
@ -174,8 +177,9 @@ in a buffer-local variable (b:foldlevels) that is only updated on |b:changedtick
enddef enddef
set foldexpr=s:MyFoldFunc() set foldexpr=s:MyFoldFunc()
< <
In above example further speedup was gained by using a precompiled Vim9script In above example further speedup was gained by using a precompiled Vim9 script
function without arguments (that must still use v:lnum). See |expr-option-function|. function without arguments (that must still use v:lnum). See
|expr-option-function|.
SYNTAX *fold-syntax* SYNTAX *fold-syntax*
@ -412,8 +416,8 @@ zX Undo manually opened and closed folds: re-apply 'foldlevel'.
Also forces recomputing folds, like |zx|. Also forces recomputing folds, like |zx|.
*zm* *zm*
zm Fold more: Subtract |v:count1| from 'foldlevel'. If 'foldlevel' was zm Fold more: Subtract |v:count1| from 'foldlevel'. If
already zero nothing happens. 'foldlevel' was already zero nothing happens.
'foldenable' will be set. 'foldenable' will be set.
*zM* *zM*