parse word-diff hidding whitespace or newline changes

README.md

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+# word-diff-filter
+
+Dealing with diff is a hard thing. You want to focus on big picture, what changes, what matters, but there's a lot to remove from a simple diff to make it usable (at least for a review)
+
+Alghorithms like patience try to reorder diffs but thats not enough. 
+
+One of the most disrupting noise inside diffs is about indentation changes. They generate a lot of attention in a diff but in almost all code they are just a step further to ignore-whitespace, I want to take that step!
+
+By now this is a filter for **git diff --word-diff=porcelain** which works on **--color** or plain output, I will work to provide an ecosystem to ease it use.
+
+#Test
+
+```bash
+$ git clone albfan:word-diff-filter
+$ cd word-diff-filter
+$ ln -s $(pwd)/word-diff-filter.py ~/bin/word-diff-filter
+$ cd <path-to-your-repo>
+$ git diff --word-diff=porcelain --color master feature | word-diff-filter
+```
+

filter-word-diff.py

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+#!/usr/bin/env python
+
+import sys
+import re
+
+header = ""
+chunk = ""
+add = 0
+change = False
+
+COLOR="(\x1b\[\d*m)?"
+def printChunk():
+    global header, chunk, change
+    if change:
+        if header:
+            print(header)
+            header = ""
+        print(chunk)
+    chunk = ""
+    change = False
+
+for line in sys.stdin:
+    if re.match("^"+COLOR+"diff --git", line):
+        printChunk()
+        header = ""
+        add = 5
+
+    if (add > 0):
+        header += line
+        add -= 1
+        continue
+        
+    if re.match("^"+COLOR+"~", line):
+        continue
+
+    if re.match("^"+COLOR+"@@", line):
+        #new chunk. does the actual contains a change
+        printChunk()
+
+    chunk += line
+
+    if not change:
+        change = re.match("^"+COLOR+"\+", line) or re.match("^"+COLOR+"-", line)
+
+printChunk()
+