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less: fix a case when regexp matches ""

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hush: remove wrong comment, expand another one
This commit is contained in:
Denis Vlasenko 2008-06-09 16:02:39 +00:00
parent 98a6f56d49
commit 3fe4f986a0
2 changed files with 17 additions and 11 deletions
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23
miscutils/less.c
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@ -172,16 +172,6 @@ static void set_tty_cooked(void)
tcsetattr(kbd_fd, TCSANOW, &term_orig); tcsetattr(kbd_fd, TCSANOW, &term_orig);
} }
/* Exit the program gracefully */
static void less_exit(int code)
{
bb_putchar('\n');
set_tty_cooked();
if (code < 0)
kill_myself_with_sig(- code); /* does not return */
exit(code);
}
/* Move the cursor to a position (x,y), where (0,0) is the /* Move the cursor to a position (x,y), where (0,0) is the
top-left corner of the console */ top-left corner of the console */
static void move_cursor(int line, int row) static void move_cursor(int line, int row)
@ -205,6 +195,16 @@ static void print_statusline(const char *str)
printf(HIGHLIGHT"%.*s"NORMAL, width - 1, str); printf(HIGHLIGHT"%.*s"NORMAL, width - 1, str);
} }
/* Exit the program gracefully */
static void less_exit(int code)
{
set_tty_cooked();
clear_line();
if (code < 0)
kill_myself_with_sig(- code); /* does not return */
exit(code);
}
#if ENABLE_FEATURE_LESS_REGEXP #if ENABLE_FEATURE_LESS_REGEXP
static void fill_match_lines(unsigned pos); static void fill_match_lines(unsigned pos);
#else #else
@ -538,6 +538,9 @@ static void print_found(const char *line)
start: start:
/* Most of the time doesn't find the regex, optimize for that */ /* Most of the time doesn't find the regex, optimize for that */
match_status = regexec(&pattern, line, 1, &match_structs, eflags); match_status = regexec(&pattern, line, 1, &match_structs, eflags);
/* if even "" matches, treat it as "not a match" */
if (match_structs.rm_so >= match_structs.rm_eo)
match_status = 1;
} }
if (!growline) { if (!growline) {

5
shell/hush.c
View File

@ -3218,7 +3218,6 @@ static int redirect_opt_num(o_string *o)
} }
#if ENABLE_HUSH_TICK #if ENABLE_HUSH_TICK
/* NB: currently disabled on NOMMU */
static FILE *generate_stream_from_list(struct pipe *head) static FILE *generate_stream_from_list(struct pipe *head)
{ {
FILE *pf; FILE *pf;
@ -3229,6 +3228,10 @@ static FILE *generate_stream_from_list(struct pipe *head)
/* By using vfork here, we suspend parent till child exits or execs. /* By using vfork here, we suspend parent till child exits or execs.
* If child will not do it before it fills the pipe, it can block forever * If child will not do it before it fills the pipe, it can block forever
* in write(STDOUT_FILENO), and parent (shell) will be also stuck. * in write(STDOUT_FILENO), and parent (shell) will be also stuck.
* Try this script:
* yes "0123456789012345678901234567890" | dd bs=32 count=64k >TESTFILE
* huge=`cat TESTFILE` # will block here forever
* echo OK
*/ */
pid = BB_MMU ? fork() : vfork(); pid = BB_MMU ? fork() : vfork();
if (pid < 0) if (pid < 0)