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updated for version 7.4.232

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Problem:    ":%s/\n//" uses a lot of memory. (Aidan Marlin)
Solution:   Turn this into a join command. (Christian Brabandt)
This commit is contained in:
Bram Moolenaar 2014-04-01 17:49:44 +02:00
parent efa304d760
commit fd3fe98b78
4 changed files with 29 additions and 2 deletions
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25
src/ex_cmds.c
View File

@ -4420,6 +4420,31 @@ do_sub(eap)
endcolumn = (curwin->w_curswant == MAXCOL);
}
/* Recognize ":%s/\n//" and turn it into a join command, which is much
* more efficient.
* TODO: find a generic solution to make line-joining operations more
* efficient, avoid allocating a string that grows in size.
*/
if (STRCMP(pat, "\\n") == 0 && STRLEN(pat) == 2
&& *sub == NUL
&& (*cmd == NUL || (cmd[1] == NUL && (*cmd == 'g' || *cmd == 'l'
|| *cmd == 'p' || *cmd == '#'))))
{
curwin->w_cursor.lnum = eap->line1;
if (*cmd == 'l')
eap->flags = EXFLAG_LIST;
else if (*cmd == '#')
eap->flags = EXFLAG_NR;
else if (*cmd == 'p')
eap->flags = EXFLAG_PRINT;
(void)do_join(eap->line2 - eap->line1 + 1, FALSE, TRUE, FALSE);
sub_nlines = sub_nsubs = eap->line2 - eap->line1 + 1;
(void)do_sub_msg(FALSE);
ex_may_print(eap);
return;
}
/*
* Find trailing options. When '&' is used, keep old options.
*/

3
src/ex_docmd.c
View File

@ -316,7 +316,6 @@ static void ex_winpos __ARGS((exarg_T *eap));
static void ex_operators __ARGS((exarg_T *eap));
static void ex_put __ARGS((exarg_T *eap));
static void ex_copymove __ARGS((exarg_T *eap));
static void ex_may_print __ARGS((exarg_T *eap));
static void ex_submagic __ARGS((exarg_T *eap));
static void ex_join __ARGS((exarg_T *eap));
static void ex_at __ARGS((exarg_T *eap));
@ -8683,7 +8682,7 @@ ex_copymove(eap)
/*
* Print the current line if flags were given to the Ex command.
*/
static void
void
ex_may_print(eap)
exarg_T *eap;
{

1
src/proto/ex_docmd.pro
View File

@ -54,4 +54,5 @@ int put_eol __ARGS((FILE *fd));
int put_line __ARGS((FILE *fd, char *s));
void dialog_msg __ARGS((char_u *buff, char *format, char_u *fname));
char_u *get_behave_arg __ARGS((expand_T *xp, int idx));
void ex_may_print __ARGS((exarg_T *eap));
/* vim: set ft=c : */

2
src/version.c
View File

@ -734,6 +734,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
232,
/**/
231,
/**/