Add "machine" criterion to match WM_CLIENT_MACHINE

Closes #3981

Add "%machine" title_format placeholder
Add "machine" to the IPC and layout saving/restoring

2 files changed, 10 insertions, 0 deletions

diff --git a/include/data.h b/include/data.h
index e411129f..1d47af64 100644
--- a/include/data.h
+++ b/include/data.h
@@ -414,6 +414,9 @@ struct Window {
      * for_window. */
     char *role;
 
+    /** WM_CLIENT_MACHINE of the window */
+    char *machine;
+
     /** Flag to force re-rendering the decoration upon changes */
     bool name_x_changed;
 
@@ -500,6 +503,7 @@ struct Match {
     struct regex *mark;
     struct regex *window_role;
     struct regex *workspace;
+    struct regex *machine;
     xcb_atom_t window_type;
     enum {
         U_DONTCHECK = -1,
diff --git a/include/window.h b/include/window.h
index 6673e835..858bf0cd 100644
--- a/include/window.h
+++ b/include/window.h
@@ -95,3 +95,9 @@ void window_update_hints(i3Window *win, xcb_get_property_reply_t *prop, bool *ur
  *
  */
 void window_update_motif_hints(i3Window *win, xcb_get_property_reply_t *prop, border_style_t *motif_border_style);
+
+/**
+ * Updates the WM_CLIENT_MACHINE
+ *
+ */
+void window_update_machine(i3Window *win, xcb_get_property_reply_t *prop);