Add pretty cat plugin for cat with syntax highlighting

plugins/available/pretty-cat.plugin.bash

@@ -0,0 +1,21 @@
+cite about-plugin                                                                                        
+about-plugin 'pygmentize instead of cat to terminal if possible'                                         
+
+if [ -z $(which pygmentize) ]                                                                            
+then                                                                                                     
+    echo "Pygments is required to use this pluging"                                                      
+    echo "Install it by doing 'pip install Pygments' as the superuser"                                   
+    exit                                                                                                 
+fi                                                                                                       
+
+# get the actual cat binary                                                                              
+CAT_BIN=$(which cat)                                                                                     
+
+# replace the cat binary for a pygmentize if possible                                                    
+cat()                                                                                                    
+{                                                                                                        
+    for var;                                                                                             
+    do                                                                                                   
+        pygmentize "$var" 2>/dev/null || "$CAT_BIN" "$var";                                              
+    done                                                                                                 
+}