diff options
| -rw-r--r-- | miscutils/less.c | 23 | ||||
| -rw-r--r-- | shell/hush.c | 5 |
2 files changed, 17 insertions, 11 deletions
diff --git a/miscutils/less.c b/miscutils/less.c index 0529b20..ecdb9ae 100644 --- a/miscutils/less.c +++ b/miscutils/less.c @@ -172,16 +172,6 @@ static void set_tty_cooked(void) 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 top-left corner of the console */ 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); } +/* 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 static void fill_match_lines(unsigned pos); #else @@ -538,6 +538,9 @@ static void print_found(const char *line) start: /* Most of the time doesn't find the regex, optimize for that */ 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) { diff --git a/shell/hush.c b/shell/hush.c index 9e574c9..b80468f 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -3218,7 +3218,6 @@ static int redirect_opt_num(o_string *o) } #if ENABLE_HUSH_TICK -/* NB: currently disabled on NOMMU */ static FILE *generate_stream_from_list(struct pipe *head) { 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. * 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. + * 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(); if (pid < 0) |