mc crash fix when '\n' is in the directory name

[Jindrich Novy <jnovy redhat com>]

Hello,

the following "uglydir" patch prevents mc from hang when it displays
directory with newline '\n' character in the name. As far as I have
tested, mc hangs in this case only in non-UTF-8 mode. The original patch
by Karel Zak. I adapted it for the recent mc CVS version and let it
correct the name only in non-UTF-8 case, otherwise it replaces UTF-8
characters by '?'.

For bug reproduction and testing please see bug #127164.

Jindrich

-- 
Jindrich Novy <jnovy redhat com>, http://people.redhat.com/jnovy/

--- mc-4.6.1-20041020/src/screen.c.uglydir	2004-10-22 10:35:22.790664184 +0200
+++ mc-4.6.1-20041020/src/screen.c	2004-10-22 10:37:30.740212896 +0200
@@ -860,6 +860,14 @@ show_dir (WPanel *panel)
 #ifndef UTF8
     trim (strip_home_and_password (panel->cwd), tmp,
 	  min(max (panel->widget.cols - 7, 0), 200));
+    
+    if (tmp && *tmp) {
+	char *s = tmp;
+	do {
+             if (!is_printable (*s))
+	         *s = '?';
+        } while (*++s);
+    }
 #else /* UTF8 */
     {
 	char *tmp2 = g_strdup(panel->cwd);
--- mc-4.6.1-20041020/src/subshell.c.uglydir	2004-09-25 15:46:23.000000000 +0200
+++ mc-4.6.1-20041020/src/subshell.c	2004-10-22 10:35:22.863653088 +0200
@@ -951,6 +951,22 @@ feed_subshell (int how, int fail_on_erro
 
 	    subshell_cwd[bytes - 1] = 0;	/* Squash the final '\n' */
 
+	    if (*subshell_cwd && current_panel && current_panel->cwd && strcmp(current_panel->cwd, subshell_cwd) &&
+			strchr(current_panel->cwd, '\n'))
+	    {
+                /* Expected CWD is diffrent and it contains line break. 
+	         * We need to read rest of CWD, because previous read() 
+	         * returns first line only.
+	         */
+	        int rbytes;
+	
+	        subshell_cwd[bytes-1] = '\n';  
+                rbytes = read(subshell_pipe[READ], (subshell_cwd+bytes), 
+			                              MC_MAXPATHLEN-bytes);
+	        if (rbytes)
+		     subshell_cwd[bytes+rbytes-1] = 0;  /* Squash the final '\n' */
+	    }
+	
 	    synchronize ();
 
 	    subshell_ready = TRUE;