Add [-w write-file] optionHEADmaster

ksh will write lines to write-file containing information about
the status of the shell:

 after prompt:          empty line
 after command entry:   "cmd" followed by command
 after cwd change:      "cwd" followed by new cwd

fg is handled specially, printing a new "cmd" line with the original
command associated with the job.

1 files changed, 10 insertions, 2 deletions

diff --git a/misc.c b/misc.c
index 393da1c..80ce13b 100644
--- a/misc.c
+++ b/misc.c
@@ -347,7 +347,7 @@ parse_args(argv, what, setargsp)
 	int	what;		/* OF_CMDLINE or OF_SET */
 	int	*setargsp;
 {
-	static char cmd_opts[NELEM(goptions) + 3]; /* o:\0 */
+	static char cmd_opts[NELEM(goptions) + 5]; /* o:w:\0 */
 	static char set_opts[NELEM(goptions) + 5]; /* Ao;s\0 */
 	char *opts;
 	char *array = (char *) 0;
@@ -359,7 +359,7 @@ parse_args(argv, what, setargsp)
 		char *p, *q;
 
 		/* see cmd_opts[] declaration */
-		strlcpy(cmd_opts, "o:", sizeof cmd_opts);
+		strlcpy(cmd_opts, "o:w:", sizeof cmd_opts);
 		p = cmd_opts + strlen(cmd_opts);
 		/* see set_opts[] declaration */
 		strlcpy(set_opts, "A:o;s", sizeof set_opts);
@@ -423,6 +423,14 @@ parse_args(argv, what, setargsp)
 			}
 			break;
 
+		  case 'w':
+			writefd = open(go.optarg, O_WRONLY);
+			if (writefd == -1) {
+				bi_errorf("could not open %s", go.optarg);
+				return -1;
+			}
+			break;
+
 		  case '?':
 			return -1;