\#saveoptions fix

I hadn't ever used #saveoptions before and when I checked to see
whether the autounlock:none changes were being handled properly, I
discovered that options set via 'm O' weren't being handled at all.

This includes some miscellaneous reformatting of things noticed
while tracking down the problem.

doc/fixes3-7-0.txt

@@ -1410,6 +1410,8 @@ tipping contents of one container directly into another allowed transferring
 prevent random traps from being created inside the shops in the tourist quest
 if hero's steed got hit by knockback effect, impossible "no monster to remove"
 	would occur (plus more warnings if 'sanity_check' was On)
+the #saveoptions command included options changed via doset_simple() but not
+	ones changed via full doset()
 
 curses: 'msg_window' option wasn't functional for curses unless the binary
 	also included tty support

src/files.c

@@ -2000,11 +2000,13 @@ do_write_config_file(void)
         wait_synch();
         pline("Some settings are not saved!");
         wait_synch();
-        pline("All manual customization and comments are removed from the file!");
+        pline(
+           "All manual customization and comments are removed from the file!");
         wait_synch();
     }
 #define overwrite_prompt "Overwrite config file %.*s?"
-    Sprintf(tmp, overwrite_prompt, (int)(BUFSZ - sizeof overwrite_prompt - 2), configfile);
+    Sprintf(tmp, overwrite_prompt,
+            (int) (BUFSZ - sizeof overwrite_prompt - 2), configfile);
 #undef overwrite_prompt
     if (!paranoid_query(TRUE, tmp))
         return ECMD_OK;
@@ -2021,7 +2023,8 @@ do_write_config_file(void)
         fclose(fp);
         strbuf_empty(&buf);
         if (wrote != len)
-            pline("An error occurred, wrote only partial data (%lu/%lu).", wrote, len);
+            pline("An error occurred, wrote only partial data (%lu/%lu).",
+                  wrote, len);
     }
     return ECMD_OK;
 }

src/options.c

@@ -4879,8 +4879,8 @@ handler_autounlock(int optidx)
         free((genericptr_t) window_pick);
     } else if (n == 0) { /* nothing was picked but menu wasn't cancelled */
         /* something that was preselected got unselected, leaving nothing;
-           treat that as picking 'none' (even though 'none' might be what
-           got unselected) */
+           treat that as picking 'none' (even though 'none' is no longer
+           among the choices) */
         flags.autounlock = 0;
     }
     destroy_nhwindow(tmpwin);
@@ -5703,8 +5703,8 @@ handler_verbose(int optidx)
                 flags.verbose = !flags.verbose;
             } else {
                 Sprintf(buf,
-                    "Set verbose_suppressor[%d] (%ld) to what new decimal value ?",
-                    j, verbosity_suppressions[j]);
+               "Set verbose_suppressor[%d] (%ld) to what new decimal value ?",
+                        j, verbosity_suppressions[j]);
                 abuf[0] = '\0';
                 getlin(buf, abuf);
                 if (abuf[0] == '\033')
@@ -8330,6 +8330,9 @@ doset(void) /* changing options via menu by Per Liboriussen */
                     reslt = (*allopt[k].optfn)(allopt[k].idx, do_handler,
                                                FALSE, empty_optstr,
                                                empty_optstr);
+                    /* if player eventually saves options, include this one */
+                    if (reslt == optn_ok)
+                        opt_set_in_config[k] = TRUE;
                 } else {
                     char abuf[BUFSZ];
 
@@ -8992,7 +8995,8 @@ all_options_strbuf(strbuf_t *sbuf)
                - verbose */
             buf2 = get_option_value(name, TRUE);
             if (buf2) {
-                Sprintf(tmp, "OPTIONS=%s:%s\n", name, buf2);
+                Snprintf(tmp, sizeof tmp - 1, "OPTIONS=%s:%s", name, buf2);
+                Strcat(tmp, "\n"); /* guaranteed to fit */
                 strbuf_append(sbuf, tmp);
             }
             break;