This 'z'aps (empties) the pattern space, without starting a new cycle
like 'd' does.
---
v2: remove inline comment, add tests based on tests for 'd'
editors/sed.c | 9 +++++++--
testsuite/sed.tests | 5 +++++
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/editors/sed.c b/editors/sed.c
index 6179c5e80..2c8231448 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -531,7 +531,7 @@ static int parse_subst_cmd(sed_cmd_t *sed_cmd, const char
*substr)
*/
static const char *parse_cmd_args(sed_cmd_t *sed_cmd, const char *cmdstr)
{
- static const char cmd_letters[] ALIGN1 = "saicrw:btTydDgGhHlnNpPqx={}";
+ static const char cmd_letters[] ALIGN1 = "saicrw:btTydDgGhHlnNpPqxz={}";
enum {
IDX_s = 0,
IDX_a,
@@ -557,6 +557,7 @@ static const char *parse_cmd_args(sed_cmd_t *sed_cmd, const
char *cmdstr)
IDX_P,
IDX_q,
IDX_x,
+ IDX_z,
IDX_equal,
IDX_lbrace,
IDX_rbrace,
@@ -639,7 +640,7 @@ static const char *parse_cmd_args(sed_cmd_t *sed_cmd, const
char *cmdstr)
/* if it wasn't a single-letter command that takes no arguments
* then it must be an invalid command.
*/
- else if (idx >= IDX_nul) { /* not d,D,g,G,h,H,l,n,N,p,P,q,x,=,{,} */
+ else if (idx >= IDX_nul) {
bb_error_msg_and_die("unsupported command %c", sed_cmd->cmd);
}
@@ -1485,6 +1486,10 @@ static void process_files(void)
G.hold_space = tmp;
break;
}
+ case 'z': /* Zap pattern space */
+ free(pattern_space);
+ pattern_space = xzalloc(1);
+ break;
} /* switch */
} /* for each cmd */
diff --git a/testsuite/sed.tests b/testsuite/sed.tests
index 626542e33..39fd4c772 100755
--- a/testsuite/sed.tests
+++ b/testsuite/sed.tests
@@ -105,6 +105,11 @@ testing "sed d ends script iteration" \
testing "sed d ends script iteration (2)" \
"sed -e '/ook/d;a\' -e 'bang'" "woot\nbang\n" "" "ook\nwoot\n"
+testing "sed z continues script iteration" \
+ "sed -e '/ook/z;s/ook/ping/p;i woot'" "woot\n\n" "" "ook\n"
+testing "sed z continues script iteration (2)" \
+ "sed -e '/ook/z;a\' -e 'bang'" "\nbang\nwoot\nbang\n" "" "ook\nwoot\n"
+
# Multiple files, with varying newlines and NUL bytes
test x"$SKIP_KNOWN_BUGS" = x"" && {
testing "sed embedded NUL" "sed -e 's/woo/bang/'" "\0bang\0woo\0" "" \
--
2.48.1.windows.1
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