Difftastic is a structural diff tool that understands syntax. See the manual to get started, and the changelog for historical changes.

Diffing

Improved diff cost model to prefer finding unchanged variable names over unchanged punctuation.

Parsing

Added support for Hare, Pascal and QML.

ZIP files are now always treated as binary files.

Difftastic is now stricter about text content validity, so more binary files are correctly detected.

Display

Changed words in changed comments are now also underlined, to make them more visible.

Fixed crash when word-wrapping lines containing Unicode combining diacritics characters.