Fix for numbered directories or files

This commit fixes some odd behavior for numbered files and
directories. Even if the environment variables is undefined
cd'ing into a numbered directory is not possible. This pathc
fixes this by checking if the argument is a valid
file or directory and is numnbered and if this is the case will
only output the argument values instead of a substitution with $e..

In case there exist both, numbered valid argument and the
directory or folder, the file will always win to avoid clashes with
standard wrapped functions like cd, rm, mv...

lib/git/status_shortcuts.sh

@@ -121,7 +121,11 @@ scmb_expand_args() {
   for arg in "$@"; do
     if [[ "$arg" =~ ^[0-9]+$ ]] ; then      # Substitute $e{*} variables for any integers
       if [ "$first" -eq 1 ]; then first=0; else printf '\t'; fi
+      if [ -e "$arg" ]; then 
+        printf '%s' "$arg"
+      else
         eval printf '%s' "\"\$$git_env_char$arg\""
+      fi
     elif [[ "$arg" =~ ^[0-9]+-[0-9]+$ ]]; then           # Expand ranges into $e{*} variables
 
       for i in $(eval echo {${arg/-/..}}); do