Workspace command number selection

If a `workspace {N}` or `move to workspace {N}` command is given with N
as a plain number, the workspace of this number is selected for the
context of the command if one exists and there is no workspace with a
name that exactly matches N.

src/commands.c

@@ -513,7 +513,27 @@ void cmd_move_con_to_workspace_name(I3_CMD, char *name) {
 
     LOG("should move window to workspace %s\n", name);
     /* get the workspace */
-    Con *ws = workspace_get(name, NULL);
+    Con *ws = NULL;
+    Con *output = NULL;
+
+    /* first look for a workspace with this name */
+    TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
+        GREP_FIRST(ws, output_get_content(output), !strcasecmp(child->name, name));
+    }
+
+    /* if the name is plain digits, we interpret this as a "workspace number"
+     * command */
+    if (!ws && name_is_digits(name)) {
+        long parsed_num = ws_name_to_number(name);
+        TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
+            GREP_FIRST(ws, output_get_content(output),
+                       child->num == parsed_num);
+        }
+    }
+
+    /* if no workspace was found, make a new one */
+    if (!ws)
+        ws = workspace_get(name, NULL);
 
     ws = maybe_auto_back_and_forth_workspace(ws);
 
@@ -1006,7 +1026,30 @@ void cmd_workspace_name(I3_CMD, char *name) {
     DLOG("should switch to workspace %s\n", name);
     if (maybe_back_and_forth(cmd_output, name))
         return;
-    workspace_show_by_name(name);
+
+    Con *ws = NULL;
+    Con *output = NULL;
+
+    /* first look for a workspace with this name */
+    TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
+        GREP_FIRST(ws, output_get_content(output), !strcasecmp(child->name, name));
+    }
+
+    /* if the name is only digits, we interpret this as a "workspace number"
+     * command */
+    if (!ws && name_is_digits(name)) {
+        long parsed_num = ws_name_to_number(name);
+        TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
+            GREP_FIRST(ws, output_get_content(output),
+                       child->num == parsed_num);
+        }
+    }
+
+    /* if no workspace was found, make a new one */
+    if (!ws)
+        ws = workspace_get(name, NULL);
+
+    workspace_show(ws);
 
     cmd_output->needs_tree_render = true;
     // XXX: default reply for now, make this a better reply

testcases/t/232-cmd-workspace-number-selection.t

@@ -0,0 +1,52 @@
+#!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)
+#
+# Test that `workspace {N}` acts like `workspace number {N}` when N is a plain
+# digit, and likewise for `move to workspace {N}`.
+# Ticket: #1238
+# Bug still in: 4.8-16-g3f5a0f0
+use i3test;
+
+cmd 'workspace 5:foo';
+open_window;
+fresh_workspace;
+cmd 'workspace 5';
+
+is(focused_ws, '5:foo',
+    'a command to switch to a workspace with a bare number should switch to a workspace of that number');
+
+fresh_workspace;
+my $win = open_window;
+cmd '[id="' . $win->{id} . '"] move to workspace 5';
+
+is(@{get_ws('5:foo')->{nodes}}, 2,
+    'a command to move a container to a workspace with a bare number should move that container to a workspace of that number');
+
+fresh_workspace;
+cmd 'workspace 7';
+open_window;
+cmd 'workspace 7:foo';
+$win = open_window;
+
+cmd 'workspace 7';
+is(focused_ws, '7',
+    'a workspace with a name that is a matching plain number should be preferred when switching');
+
+cmd '[id="' . $win->{id} . '"] move to workspace 7';
+is(@{get_ws('7')->{nodes}}, 2,
+    'a workspace with a name that is a matching plain number should be preferred when moving');
+
+done_testing;