Hi,
On 2025. 03. 05. 5:52, Jeremy Drake wrote:
This 'z'aps (empties) the pattern space, without starting a new cycle
like 'd' does.
Signed-off-by: Jeremy Drake <[email protected]>
---
editors/sed.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/editors/sed.c b/editors/sed.c
index 6179c5e80..de411fbf4 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) { /* not d,D,g,G,h,H,l,n,N,p,P,q,x,z,=,{,} */
Please remove this inline comment. The above block comment already
addresses this case much better. And otherwise we'll just be stuck
editing this whenever a new flag is added.
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 */
Bence
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