[Fix #37] Improve Git status parsing

plugins/git/functions/git-info

@@ -274,11 +274,13 @@ function git-info() {
       fi
     else
       # Count added, deleted, modified, renamed, unmerged, untracked, dirty.
-      [[ "$line" == (((A|M|D|T) )|(AD|AM|AT|MM))\ * ]] && (( added++ ))
-      [[ "$line" == ( D|AD)\ * ]] && (( deleted++ ))
-      [[ "$line" == (( (M|T))|(AM|AT|MM))\ * ]] && (( modified++ ))
-      [[ "$line" == R\ \ * ]] && (( renamed++ ))
-      [[ "$line" == UU\ * ]] && (( unmerged++ ))
+      # T (type change) is undocumented, see http://git.io/FnpMGw.
+      # For a table of scenarii, see http://i.imgur.com/2YLu1.png.
+      [[ "$line" == ([ACDMT][\ MT]|[ACMT]D)\ * ]] && (( added++ ))
+      [[ "$line" == [\ ACMRT]D\ * ]] && (( deleted++ ))
+      [[ "$line" == ?[MT]\ * ]] && (( modified++ ))
+      [[ "$line" == R?\ * ]] && (( renamed++ ))
+      [[ "$line" == (AA|DD|U?|?U)\ * ]] && (( unmerged++ ))
       [[ "$line" == \?\?\ * ]] && (( untracked++ ))
       (( dirty++ ))
     fi