Removed %T in mode-line-format. Trivial documentation changes.

[bpt/emacs.git] / lib-src / emacsclient.c

diff --git a/lib-src/emacsclient.c b/lib-src/emacsclient.c
index 563a8ba..9ab9dc3 100644 (file)
--- a/lib-src/emacsclient.c
+++ b/lib-src/emacsclient.c
@@ -1,5 +1,5 @@
 /* Client process that communicates with GNU Emacs acting as server.
-   Copyright (C) 1986, 1987, 1994, 1999, 2000, 2001, 2003
+   Copyright (C) 1986, 1987, 1994, 1999, 2000, 2001, 2003, 2004
    Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
@@ -282,23 +282,36 @@ char _sobuf[BUFSIZ];
 #endif
 #endif
 
+/* A signal handler that passes the signal to the Emacs process.
+   Useful for SIGWINCH.  */
+
 SIGTYPE
-window_change_signal (int signalnum)
+pass_signal_to_emacs (int signalnum)
 {
   int old_errno = errno;
 
   if (emacs_pid)
-    kill (emacs_pid, SIGWINCH);
+    kill (emacs_pid, signalnum);
 
-  signal (SIGWINCH, window_change_signal);
+  signal (signalnum, pass_signal_to_emacs);
   errno = old_errno;
 }
 
+/* Set up signal handlers before opening a frame on the current tty.  */
+   
 void
 init_signals (void)
 {
   /* Set up signal handlers. */
-  signal (SIGWINCH, window_change_signal);
+  signal (SIGWINCH, pass_signal_to_emacs);
+
+  /* Don't pass SIGINT and SIGQUIT to Emacs, because it has no way of
+     deciding which terminal the signal came from.  C-g is now a
+     normal input event on secondary terminals.  */
+#if 0
+  signal (SIGINT, pass_signal_to_emacs);
+  signal (SIGQUIT, pass_signal_to_emacs);
+#endif
 }
 
 \f
@@ -430,9 +443,10 @@ main (argc, argv)
 
   {
     int sock_status = 0;
-    int oerrno = 0;
+    int default_sock = !socket_name;
+    int saved_errno = 0;
     
-    if (! socket_name)
+    if (default_sock)
       {
        socket_name = alloca (system_name_length + 100);
        sprintf (socket_name, "/tmp/emacs%d-%s/server",
@@ -450,8 +464,8 @@ main (argc, argv)
 
     /* See if the socket exists, and if it's owned by us. */
     sock_status = socket_status (server.sun_path);
-    oerrno = errno;
-    if (sock_status)
+    saved_errno = errno;
+    if (sock_status && default_sock)
       {
        /* Failing that, see if LOGNAME or USER exist and differ from
           our euid.  If so, look for a socket based on the UID
@@ -468,10 +482,20 @@ main (argc, argv)
            if (pw && (pw->pw_uid != geteuid ()))
              {
                /* We're running under su, apparently. */
-               sprintf (server.sun_path, "/tmp/esrv%d-%s",
+               sprintf (socket_name, "/tmp/emacs%d-%s/server",
                         (int) pw->pw_uid, system_name);
+
+               if (strlen (socket_name) < sizeof (server.sun_path))
+                 strcpy (server.sun_path, socket_name);
+               else
+                 {
+                   fprintf (stderr, "%s: socket-name %s too long",
+                            argv[0], socket_name);
+                   exit (1);
+                 }
+
                sock_status = socket_status (server.sun_path);
-                oerrno = errno;
+                saved_errno = errno;
              }
          }
       }
@@ -490,14 +514,14 @@ main (argc, argv)
 
        case 2:
         /* `stat' failed */
-        if (errno == ENOENT)
+        if (saved_errno == ENOENT)
           fprintf (stderr,
                    "%s: Can't find socket; have you started the server?\n\
 To start the server in Emacs, type \"M-x server-start\".\n",
                    argv[0]);
         else
           fprintf (stderr, "%s: Can't stat %s: %s\n",
-                   argv[0], server.sun_path, strerror (oerrno));
+                   argv[0], server.sun_path, strerror (saved_errno));
         fail ();
         break;
        }