Giuseppe Scrivano c0fa19fe92 diff: add support for --color ...

* doc/diffutils.texi (diff Options): Add documentation for --color.
Copied from coreutils ls --color.
* src/context.c (pr_unidiff_hunk): Set the color context.
(print_context_header): Likewise.
(pr_context_hunk): Likewise.
* src/diff.h (enum colors_style): New enum to record when to use colors.
(colors_style): New variable to memorize the argument value.
(set_color_context): Add function definition.
* src/diff.c: : Define COLOR_OPTION.
(specify_colors_style): New function.
(longopts): Add --color.
(main): Handle --color argument.
(option_help_msgid): Add usage string for --color.
* src/normal.c (print_normal_hunk): Set the color context.
* src/side.c (print_1sdiff_line): Likewise.
* src/util.c (print_1_line_nl): New function.
(print_1_line): Make it a wrapper of 'print_1_line_nl'.
(colors_enabled): New boolean variable.
(begin_output): Call check_color_output once the output file is
configured.
(output_1_line): Periodically call `process_signals'.
(caught_signals): New sigset_t.
(colors_enabled): New boolean variable.
(interrupt_signal): New sig_atomic_t.
(stop_signal_count): New sig_atomic_t.
(check_color_output): New function.
(install_signal_handlers): Likewise. Copied from coreutils ls.
(process_signals): Likewise.  Copied from coreutils ls.
(set_color_context): New function.
(sighandler): Likewise.  Copied from coreutils ls.
(stophandler): Likewise.  Copied from coreutils ls.

2015-11-29 08:20:53 -08:00

..

diagmeet.note

maint: quote 'like this' or "like this", not `like this'

2012-01-25 23:54:38 -08:00

diffutils.texi

diff: add support for --color

2015-11-29 08:20:53 -08:00

Makefile.am

maint: update copyright year ranges to include 2015; update gnulib

2015-01-01 22:31:27 -08:00