aniani/vim
0
0
Fork 1
mirror of https://github.com/vim/vim.git synced 2025-09-23 03:43:49 -04:00
Code Activity

patch 9.0.0951: trying every character position for a match is inefficient

Browse Source 
Problem:    Trying every character position for a match is inefficient.
Solution:   Use the start position of the match ignoring "\zs".
This commit is contained in:
Bram Moolenaar
2022-11-26 11:47:10 +00:00
parent c96311b5be
commit 01105b37a1
5 changed files with 34 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
src/regexp_bt.c
View File

@@ -4842,11 +4842,12 @@ regtry(
static long
bt_regexec_both(
char_u *line,
colnr_T col, // column to start looking for match
colnr_T startcol, // column to start looking for match
int *timed_out) // flag set on timeout or NULL
{
bt_regprog_T *prog;
char_u *s;
colnr_T col = startcol;
long retval = 0L;
// Create "regstack" and "backpos" if they are not allocated yet.
@@ -5042,11 +5043,19 @@ theend:
if (end->lnum < start->lnum
|| (end->lnum == start->lnum && end->col < start->col))
rex.reg_mmatch->endpos[0] = rex.reg_mmatch->startpos[0];
// startpos[0] may be set by "\zs", also return the column where
// the whole pattern matched.
rex.reg_mmatch->rmm_matchcol = col;
}
else
{
if (rex.reg_match->endp[0] < rex.reg_match->startp[0])
rex.reg_match->endp[0] = rex.reg_match->startp[0];
// startpos[0] may be set by "\zs", also return the column where
// the whole pattern matched.
rex.reg_match->rm_matchcol = col;
}
}