difft - Man Page

Set the background brightness. Difftastic will prefer brighter colours on dark backgrounds.

Use a text diff if either input file exceeds this size.

Report whether there are any changes, but don’t calculate them. Much faster.

When to use color output.

The number of contextual lines to show around changed lines.

Display mode for showing results.

side-by-side: Display the before file and the after file in two separate columns, with line numbers aligned according to unchanged content. If a change is exclusively additions or exclusively removals, use a single column.

side-by-side-show-both: The same as side-by-side, but always uses two columns.

inline: A single column display, closer to traditional diff display.

json: Output the results as a machine-readable JSON array with an element per file.

Set the exit code to 1 if there are syntactic changes in any files. For files where there is no detected language (e.g. unsupported language or binary files), sets the exit code if there are any byte changes.

Use a text diff if the structural graph exceed this number of nodes in memory.

Print help information.

Don’t consider comments when diffing.

Print the all the languages supported by difftastic, along with their extensions.

Treat paths that don’t exist as equivalent to an empty file. Only applies when diffing files, not directories.

Associate this glob pattern with this language, overriding normal language detection. For example:

$ difft --override=’*.c:C++’ old.c new.c

See --list-languages for the list of language names. Language names are matched case insensitively. Overrides may also specify the language “text” to treat a file as plain text.

This argument may be given more than once. For example:

$ difft --override=`CustomFile:json' --override=’*.c:text’ old.c new.c

To configure multiple overrides using environment variables, difftastic also accepts DFT_OVERRIDE_1 up to DFT_OVERRIDE_9.

$ export DFT_OVERRIDE=`CustomFile:json' $ export DFT_OVERRIDE_1=`.c:text’ $ export DFT_OVERRIDE_2=’.js:javascript jsx'

When multiple overrides are specified, the first matching override wins.

Use a text diff if the number of parse errors exceeds this value.

Don’t display anything if a file is unchanged.

When diffing a directory, output the results sorted by path. This is slower.

Remove any carriage return characters before diffing. This can be helpful when dealing with files on Windows that contain CRLF, i.e. ***.

Enable or disable syntax highlighting.

Treat a tab as this many spaces.

Print version information.

Use this many columns when calculating line wrapping. If not specified, difftastic will detect the terminal width.

Parse a single file with tree-sitter and display the difftastic syntax tree.

Parse a single file with tree-sitter and display the tree-sitter parse tree.