icdiff

icdiff is a text diff CLI that renders side-by-side, colorized comparisons for files and directory trees. It is mainly for review workflows where plain diff or default VCS output makes small line-level changes hard to read.

• Compare two text files with inline change highlighting, custom labels, line numbers, whitespace controls, and whole-file or contextual views.
• Compare directory trees, recurse into subdirectories, exclude path patterns, and optionally flag permission differences or identical files.
• Use it as a Git, Subversion, or Mercurial difftool when reviewing working-tree changes from the terminal.

• Direct two-path invocation, script-friendly exit codes, and non-interactive flags make it easy to drop into inspect or verify steps.
• Output is ANSI-colored plain text only, so agents cannot rely on structured parsing the way they could with JSON-emitting CLIs.
• Best fit is human-in-the-loop review after an agent edits files, especially when a clearer side-by-side diff is more useful than raw patch output.

• It is text-oriented: invalid encodings and binary-like inputs surface errors instead of a rich comparison view.
• Display quality depends on terminal width and ANSI color support; --cols and wrapping or truncation options may need tuning in automation.