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

Parsing

Syntax error nodes are now always treated as atoms. This produces better results when difftastic doesn't fully support the syntax (e.g. PostCSS is a superset of CSS) or when there are actual syntax errors.

Fixed a crash on file content detection when the local MIME database contains blank lines.

Display

Line numbers styling has been tweaked to make it more visually distinct from file content.

Fixed an issue with inline display discarding newlines when color is disabled, leading to broken display.

Two column display now ensures that both columns have the same width, so line wrapping is at the same point on both sides.