(set-frame-configuration): Assign name parameter only

if it has been set explicitly before.

3 files changed, 3 insertions, 27 deletions

diff --git a/src/macfns.c b/src/macfns.c
index 8dff77cd5fd..1139158f165 100644
--- a/src/macfns.c
+++ b/src/macfns.c
@@ -1855,15 +1855,7 @@ x_implicitly_set_name (f, arg, oldval)
 }
 
 /* Change the title of frame F to NAME.
-   If NAME is nil, use the frame name as the title.
-
-   If EXPLICIT is non-zero, that indicates that lisp code is setting the
-       name; if NAME is a string, set F's name to NAME and set
-       F->explicit_name; if NAME is Qnil, then clear F->explicit_name.
-
-   If EXPLICIT is zero, that indicates that Emacs redisplay code is
-       suggesting a new name, which lisp code should override; if
-       F->explicit_name is set, ignore the new name; otherwise, set it.  */
+   If NAME is nil, use the frame name as the title.  */
 
 void
 x_set_title (f, name, old_name)
diff --git a/src/w32fns.c b/src/w32fns.c
index d260b0d9be9..e8a2dc913de 100644
--- a/src/w32fns.c
+++ b/src/w32fns.c
@@ -1937,15 +1937,7 @@ x_implicitly_set_name (f, arg, oldval)
 }
 
 /* Change the title of frame F to NAME.
-   If NAME is nil, use the frame name as the title.
-
-   If EXPLICIT is non-zero, that indicates that lisp code is setting the
-       name; if NAME is a string, set F's name to NAME and set
-       F->explicit_name; if NAME is Qnil, then clear F->explicit_name.
-
-   If EXPLICIT is zero, that indicates that Emacs redisplay code is
-       suggesting a new name, which lisp code should override; if
-       F->explicit_name is set, ignore the new name; otherwise, set it.  */
+   If NAME is nil, use the frame name as the title.  */
 
 void
 x_set_title (f, name, old_name)
diff --git a/src/xfns.c b/src/xfns.c
index 80f21411890..13672736849 100644
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -1764,15 +1764,7 @@ x_implicitly_set_name (f, arg, oldval)
 }
 
 /* Change the title of frame F to NAME.
-   If NAME is nil, use the frame name as the title.
-
-   If EXPLICIT is non-zero, that indicates that lisp code is setting the
-       name; if NAME is a string, set F's name to NAME and set
-       F->explicit_name; if NAME is Qnil, then clear F->explicit_name.
-
-   If EXPLICIT is zero, that indicates that Emacs redisplay code is
-       suggesting a new name, which lisp code should override; if
-       F->explicit_name is set, ignore the new name; otherwise, set it.  */
+   If NAME is nil, use the frame name as the title.  */
 
 void
 x_set_title (f, name, old_name)