Bugfix: Don’t focus the wrong workspace when moving to scratchpad (+test) (Thanks loblik)

The problem was that scratchpad_move() didn’t check whether the source
workspace was focused. Therefore, 'move scratchpad' only worked reliably
interactively , but not when used with criteria.

src/con.c

@@ -657,7 +657,9 @@ void con_move_to_workspace(Con *con, Con *workspace, bool fix_coordinates, bool
      * con focused. Otherwise, we leave the focus on the current workspace as we
      * don’t want to focus invisible workspaces */
     if (source_output != dest_output &&
-        workspace_is_visible(workspace)) {
+        workspace_is_visible(workspace) &&
+        workspace->name[0] != '_' &&
+        workspace->name[1] != '_') {
         DLOG("Moved to a different output, focusing target\n");
     } else {
         /* Descend focus stack in case focus_next is a workspace which can

src/scratchpad.c

@@ -58,7 +58,8 @@ void scratchpad_move(Con *con) {
 
     /* 4: Fix focus. Normally, when moving a window to a different output, the
      * destination output gets focused. In this case, we don’t want that. */
-    con_focus(focus_next);
+    if (con_get_workspace(focus_next) == con_get_workspace(focused))
+        con_focus(focus_next);
 }
 
 /*

testcases/t/198-regression-scratchpad-crash.t

@@ -0,0 +1,19 @@
+#!perl
+# vim:ts=4:sw=4:expandtab
+# When using a command which moves a window to scratchpad from an invisible
+# (e.g. unfocused) workspace and immediately shows that window again, i3
+# crashed.
+# Bug still in: 4.2-305-g22922a9
+use i3test;
+
+my $ws1 = fresh_workspace;
+my $invisible_window = open_window;
+my $other_focusable_window = open_window;
+
+my $ws2 = fresh_workspace;
+my $id = $invisible_window->id;
+cmd qq|[id="$id"] move scratchpad, scratchpad show|;
+
+does_i3_live;
+
+done_testing;