Fix crash at startup on terminal resize (#469)

do actual screen resize only when we are fully running

in addition: do not treat terminal resize as a key press

src/globalvars.h

@@ -169,6 +169,7 @@ extern bool demode;
 extern bool ctcomp;
 extern bool show_time;
 extern bool use_rxvt;
+extern bool tlf_initialized;
 extern bool time_master;
 extern bool noautocq;
 extern bool no_arrows;

src/main.c

@@ -78,6 +78,7 @@ int portnum = 0;
 
 bool use_rxvt = false;
 bool use_xterm = false;
+bool tlf_initialized = false;   // true: everything has been set up
 
 int tlfcolors[8][2] = { {COLOR_BLACK, COLOR_WHITE},
     {COLOR_GREEN, COLOR_YELLOW},
@@ -1140,6 +1141,9 @@ int main(int argc, char *argv[]) {
 	exit(EXIT_FAILURE);
     }
 
+    tlf_initialized = true;
+
+
     /* now start logging  !! Does never return */
     logit();
 

src/ui_utils.c

@@ -41,9 +41,12 @@ int key_kPRV3 = 0;
 int key_kNXT5 = 0;
 int key_kPRV5 = 0;
 
-pthread_mutex_t panel_mutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t panel_mutex = PTHREAD_MUTEX_INITIALIZER;
 
-static int getkey(int wait);
+static const bool WAIT = true;
+static const bool NO_WAIT = false;
+
+static int getkey(bool wait);
 static int onechar(void);
 void resize_layout(void);
 
@@ -125,32 +128,41 @@ void lookup_keys() {
  *
  */
 int key_get() {
-    return getkey(1);
+    return getkey(WAIT);
 }
 
 /** key_poll return next key from terminal if there is one
  *
  */
 int key_poll() {
-    return getkey(0);
+    return getkey(NO_WAIT);
 }
 
 
 /* helper function to set 'nodelay' mode according to 'wait'
  * parameter and then ask for the next character
  * leaves 'nodelay' afterwards always as FALSE (meaning: wait for
  * character
+ * in both ('wait' and 'no-wait') mode terminal resizes are handled,
+ * but no KEY_RESIZE is returned.
  */
-static int getkey(int wait) {
-    int x = 0;
+static int getkey(bool wait) {
 
     nodelay(stdscr, wait ? FALSE : TRUE);
 
-    x = onechar();
+    bool done = !wait;
+    int x;
+    do {
+	x = onechar();
 
-    if (x == KEY_RESIZE) {
-	resize_layout();
-    }
+	if (x == KEY_RESIZE) {
+	    resize_layout();
+	    x = 0;  // do not propagate KEY_RESIZE to caller
+	} else {
+	    done = true;
+	}
+
+    } while (!done);
 
     nodelay(stdscr, FALSE);
 
@@ -337,6 +349,9 @@ static int onechar(void) {
  */
 void resize_layout(void) {
     getmaxyx(stdscr, ymax, xmax);
+    if (!tlf_initialized) {
+	return;     // only update terminal size
+    }
     clear_display();
     clusterinfo();
     refresh_splitlayout();

test/data.c

@@ -37,6 +37,8 @@ char pr_hostaddress[48] = "111.222.111.222";
 char *config_file = NULL;
 int portnum = 0;
 
+bool tlf_initialized = false;
+
 bool use_rxvt = false;
 int use_xterm = 0;
 int tlfcolors[8][2] = { {COLOR_BLACK, COLOR_WHITE},