Added checks for qsort, fixed some typos in README, cleaned up config file

README.md

@@ -68,7 +68,7 @@ or press `m` in `cfiles` to add new bookmarks.
 If `$XDG_CACHE_HOME` is not set, then `$HOME/.cache` is used.
 
 ## Image Previews
-`cfiles` uses `w3mimgdisplay` to generate imagepreviews. To setup imagepreviews, move the `displayimg` and `clearimg` scripts to wherever you like and the set the appropriate path in `config,h`.
+`cfiles` uses `w3mimgdisplay` to generate image previews. To setup image previews, move the `displayimg` and `clearimg` scripts to wherever you like and the set the appropriate path in `config.h`.
 You may have to modify the scripts a little, about which you can read [here](https://wiki.vifm.info/index.php/How_to_preview_images).
 
 ## Why C?

cf.c

@@ -19,6 +19,7 @@
 #include <string.h>
 #include <strings.h>
 #include <limits.h>
+#include <signal.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <pwd.h>
@@ -602,6 +603,10 @@ void getImgPreview(char *filepath, int maxy, int maxx)
         execl(DISPLAYIMG,DISPLAYIMG,arg1,arg2,arg3,arg4,filepath,(char *)NULL);
         exit(1);
     }
+    else
+    {
+        signal(SIGCHLD, SIG_IGN);
+    }
 }
 
 
@@ -1160,7 +1165,9 @@ int main(int argc, char* argv[])
         allocSize = snprintf(NULL,0,"%s",dir);
         sort_dir = malloc(allocSize+1);
         strncpy(sort_dir,dir,allocSize+1);
-        qsort(directories, len, sizeof (char*), compare);
+
+        if( len > 0 )
+            qsort(directories, len, sizeof (char*), compare);
 
         // In case the last file is selected and it get's removed or moved
         if(selection > len-1)

config.h

@@ -1,6 +1,7 @@
 #ifndef CONFIG
 #define CONFIG
 
+
 /*
     cfiles settings
 */
@@ -11,22 +12,26 @@
 // Set to 0 if you want to disable borders
 #define SHOW_BORDERS 1
 
-// Program usd to open non-text file (Eg: `xdg-open` or `thunar`)
+// Program used to open non-text file (Eg: `xdg-open` or `thunar`)
 #define FILE_OPENER "/usr/bin/xdg-open"
 
 // Display Image Script
 #define DISPLAYIMG "/home/manan/Scripts/displayimg"
+
 // Clear Image Preview Script
 #define CLEARIMG "/home/manan/Scripts/clearimg"
 
+
 /*
     Color Settings
 */
 
 // Shell Color Number to use for directories
 #define DIR_COLOR 2
+
 // Shell Color Number to use for file count which is displayed in the statusbar
 #define STATUS_FILECOUNT_COLOR 1
+
 // Shell Color Number to use for selected file which is displayed in the statusbar
 #define STATUS_SELECTED_COLOR 6