\tfrac, \binom, etc. should receive the same preprocessing as \frac

[EB2000]

Hi!

latexdiff makes some effort to add some braces where needed to be able to process inputs such as \frac ab instead of \frac{a}{b}. amsmath declares several “frac-like” commands; they should be processed in the same way.

The attached patch, against 83bfbe7, makes latexdiff process \tfrac, \dfrac, \binom, \tbinom, \dbinom in the same way as it processes \frac.

[EB2000]

Hi!

Another patch, on top of the previous one, to preserve these commands also in comments, in the same way as \frac is replaced into \CFRAC and then replaced back into \frac.

All these commands are treated in a single s/// , and I have lumped \sqrt as well.

Two questions:

• Why all this work to preserve comments? Why not simply discard all comments from the output? Are people actually reading the output of latexdiff, instead of simply compiling it?
• What is the point of the 1 while s///; construct here? I don't see how the s/// could succeed several times in a row...

Thanks!