/usr/bin/ydiff

usage: ydiff [options] [file|dir ...]

View colored, incremental diff in a workspace or from stdin, in side-by-side or unified moded, and auto paged.

options:
  -h, --help            show this help message and exit
  -s, --side-by-side    enable side-by-side mode (default True; DEPRECATED)
  -u, --unified         show diff in unified mode (disables side-by-side mode)
  -w N, --width N       set text width for side-by-side mode, 0 (default) for auto detection and
                        fallback to 80 when not possible
  -l, --log             show log with changes from revision control
  -c WHEN, --color WHEN
                        colorize mode 'auto' (default), 'always', or 'never'
  -t N, --tab-width N   convert tab chars to this many spaces (default: 8)
  --wrap                wrap long lines in side-by-side mode (default True; DEPRECATED)
  --nowrap, --no-wrap   do not wrap long lines in side-by-side mode
  -p PAGER, --pager PAGER
                        pager application to feed output to, default is 'less'
  -o OPT, --pager-options OPT
                        options to supply to pager application
  --theme THEME         option to pick a color theme (one of dark, default, light)
  --version             show program's version number and exit

Note: Option parser will stop on first unknown option and pass them down to underneath revision control. Environment variable YDIFF_OPTIONS may be used to specify default options that will be placed at the beginning of the argument list.