Match on all criteria even if con_id or con_mark are given.

Previously, if a match specification contained the con_id or con_mark criterion,
all other criteria were ignored. However, a user may want to specify one of
those two unique identifiers and still specify others as well, for example to
match the currently focused window, but only if it has a certain WM_CLASS:

    [con_id=__focused__ class=special] kill

We now check all specified criteria.

fixes #2111

src/commands.c

@@ -294,33 +294,61 @@ void cmd_criteria_match_windows(I3_CMD) {
         next = TAILQ_NEXT(next, owindows);
 
         DLOG("checking if con %p / %s matches\n", current->con, current->con->name);
+
+        /* We use this flag to prevent matching on window-less containers if
+         * only window-specific criteria were specified. */
+        bool accept_match = false;
+
         if (current_match->con_id != NULL) {
+            accept_match = true;
+
             if (current_match->con_id == current->con) {
-                DLOG("matches container!\n");
-                TAILQ_INSERT_TAIL(&owindows, current, owindows);
+                DLOG("con_id matched.\n");
             } else {
-                DLOG("doesnt match\n");
-                free(current);
+                DLOG("con_id does not match.\n");
+                FREE(current);
+                continue;
             }
-        } else if (current_match->mark != NULL && !TAILQ_EMPTY(&(current->con->marks_head))) {
+        }
+
+        if (current_match->mark != NULL && !TAILQ_EMPTY(&(current->con->marks_head))) {
+            accept_match = true;
+            bool matched_by_mark = false;
+
             mark_t *mark;
             TAILQ_FOREACH(mark, &(current->con->marks_head), marks) {
                 if (!regex_matches(current_match->mark, mark->name))
                     continue;
 
                 DLOG("match by mark\n");
-                TAILQ_INSERT_TAIL(&owindows, current, owindows);
+                matched_by_mark = true;
                 break;
             }
-        } else {
-            if (current->con->window && match_matches_window(current_match, current->con->window)) {
+
+            if (!matched_by_mark) {
+                DLOG("mark does not match.\n");
+                FREE(current);
+                continue;
+            }
+        }
+
+        if (current->con->window != NULL) {
+            if (match_matches_window(current_match, current->con->window)) {
                 DLOG("matches window!\n");
-                TAILQ_INSERT_TAIL(&owindows, current, owindows);
+                accept_match = true;
             } else {
                 DLOG("doesnt match\n");
-                free(current);
+                FREE(current);
+                continue;
             }
         }
+
+        if (accept_match) {
+            TAILQ_INSERT_TAIL(&owindows, current, owindows);
+        } else {
+            FREE(current);
+            continue;
+        }
     }
 
     TAILQ_FOREACH(current, &owindows, owindows) {

src/match.c

@@ -223,11 +223,25 @@ bool match_matches_window(Match *match, i3Window *window) {
         }
     }
 
-    /* We don’t check the mark because this function is not even called when
-     * the mark would have matched - it is checked in cmdparse.y itself */
     if (match->mark != NULL) {
-        LOG("mark does not match\n");
-        return false;
+        if ((con = con_by_window_id(window->id)) == NULL)
+            return false;
+
+        bool matched = false;
+        mark_t *mark;
+        TAILQ_FOREACH(mark, &(con->marks_head), marks) {
+            if (regex_matches(match->mark, mark->name)) {
+                matched = true;
+                break;
+            }
+        }
+
+        if (matched) {
+            LOG("mark matches\n");
+        } else {
+            LOG("mark does not match\n");
+            return false;
+        }
     }
 
     return true;

testcases/t/261-match-con_id-con_mark-combinations.t

@@ -0,0 +1,51 @@
+#!perl
+# vim:ts=4:sw=4:expandtab
+#
+# Please read the following documents before working on tests:
+# • http://build.i3wm.org/docs/testsuite.html
+#   (or docs/testsuite)
+#
+# • http://build.i3wm.org/docs/lib-i3test.html
+#   (alternatively: perldoc ./testcases/lib/i3test.pm)
+#
+# • http://build.i3wm.org/docs/ipc.html
+#   (or docs/ipc)
+#
+# • http://onyxneon.com/books/modern_perl/modern_perl_a4.pdf
+#   (unless you are already familiar with Perl)
+#
+# Ticket: #2111
+use i3test;
+
+my ($ws);
+
+###############################################################################
+# Verify that con_id can be combined with other criteria
+###############################################################################
+
+$ws = fresh_workspace;
+open_window(wm_class => 'matchme');
+
+cmd '[con_id=__focused__ class=doesnotmatch] kill';
+is(@{get_ws($ws)->{nodes}}, 1, 'window was not killed');
+
+cmd '[con_id=__focused__ class=matchme] kill';
+is(@{get_ws($ws)->{nodes}}, 0, 'window was killed');
+
+###############################################################################
+# Verify that con_mark can be combined with other criteria
+###############################################################################
+
+$ws = fresh_workspace;
+open_window(wm_class => 'matchme');
+cmd 'mark marked';
+
+cmd '[con_mark=marked class=doesnotmatch] kill';
+is(@{get_ws($ws)->{nodes}}, 1, 'window was not killed');
+
+cmd '[con_mark=marked class=matchme] kill';
+is(@{get_ws($ws)->{nodes}}, 0, 'window was killed');
+
+###############################################################################
+
+done_testing;