podiff: Implement podiff to optionally work on a word per word basis
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When only a few words in a string have changed, the ordinary diff output is unnecessarily complicated for proofreading purposes. Therefore podiff should implement a word wise diff. The implementation should present an option that activates wordwise diff and possibly define a set of criterion for when to use wordwise diff and when to fall back on ordinary diff.
Whiteboard
Implementation considerations:
While GNU wdiff provides this basic word wise diff functionality as a command line tool, it would be nice to not (re)introduce a dependence of the command line in podiff. Therefore a custom implementation is the best way to go.
For the implementation it would be fruitful to look to the GNU wdiff method[1] of converting the texts to new texts with one word per line, and then using standard diff tools and reformat the output.
Unanswered questions:
Podiff uses the standard [2]difflib for ordinary diffs.
* Should worddiff functionality be implemented as a function in podiff, as a class in the podiff file or as a class in a "utilities" file.
* And if we go with a class, should we pull ordinary diff functionlity into this class along with the worddiff criterion and do all the work there?
[1] http://
[2] http://
