Ticket #4224: add mcdiff manual page.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

doc/man/Makefile.am

@@ -3,7 +3,7 @@ if USE_NLS
 SUBDIRS = $(DOC_LINGUAS)
 endif
 
-man_MANS = mc.1 mcedit.1 mcview.1
+man_MANS = mc.1 mcedit.1 mcview.1 mcdiff.1
 
 CLEANFILES = $(man_MANS)
 
@@ -11,7 +11,8 @@ EXTRA_DIST = \
 	date-of-man-include.am \
 	mc.1.in \
 	mcedit.1.in \
-	mcview.1.in
+	mcview.1.in \
+	mcdiff.1.in
 
 DATE_LANG=en_US.UTF-8
 DATE_FORMAT=%B %Y

doc/man/date-of-man-include.am

@@ -15,6 +15,10 @@ mc.1: $(srcdir)/mc.1.in
 	MAN_FILE='$(srcdir)/mc.1.in'; MAN_DATE=$$($(MAN_DATE_CMD)); \
 	$(SED) $(SED_PARAMETERS) '$(srcdir)/mc.1.in' > '$@'
 
+mcdiff.1: $(srcdir)/mcdiff.1.in
+	MAN_FILE='$(srcdir)/mcdiff.1.in'; MAN_DATE=$$($(MAN_DATE_CMD)); \
+	$(SED) $(SED_PARAMETERS) '$(srcdir)/mcdiff.1.in' > '$@'
+
 mcedit.1: $(srcdir)/mcedit.1.in
 	MAN_FILE='$(srcdir)/mcedit.1.in'; MAN_DATE=$$($(MAN_DATE_CMD)); \
 	$(SED) $(SED_PARAMETERS) '$(srcdir)/mcedit.1.in' > '$@'

doc/man/mcdiff.1.in

@@ -0,0 +1,97 @@
+.TH MCDIFF 1 "%DATE_OF_MAN_PAGE%" "MC Version %MAN_VERSION%" "GNU Midnight Commander"
+.SH NAME
+mcdiff \- Internal diff viewer of GNU Midnight Commander.
+.SH USAGE
+.B mcdiff
+[\-bcCdfhstVx?] file1 file2
+.SH DESCRIPTION
+.LP
+mcdiff is a link to
+.BR mc ,
+the main GNU Midnight Commander executable.  Executing GNU Midnight
+Commander under this name requests starting the internal diff viewer
+which compares
+.I file1
+and
+.I file2
+specified on the command line.
+.SH OPTIONS
+.TP
+.I "\-b"
+Force black and white display.
+.TP
+.I "\-c"
+Force color mode on terminals where
+.B mcdiff
+defaults to black and white.
+.TP
+.I "\-C <keyword>=<fgcolor>,<bgcolor>,<attributes>:<keyword>= ..."
+Specify a different color set.  See the
+.B Colors
+section in mc(1) for more information.
+.TP
+.I "\-d"
+Disable mouse support.
+.TP
+.I "\-f"
+Display the compiled\-in search paths for Midnight Commander files.
+.TP
+.I "\-t"
+Used only if the code was compiled with S\-Lang and terminfo: it makes
+the Midnight Commander use the value of the
+.B TERMCAP
+variable for the terminal information instead of the information on
+the system wide terminal database
+.TP
+.I "\-V"
+Displays the version of the program.
+.TP
+.I "\-x"
+Forces xterm mode.  Used when running on xterm\-capable terminals (two
+screen modes, and able to send mouse escape sequences).
+.PP
+.SH COLORS
+The default colors may be changed by appending to the
+.B MC_COLOR_TABLE
+environment variable.  Foreground and background colors pairs may be
+specified for example with:
+.PP
+.nf
+MC_COLOR_TABLE="$MC_COLOR_TABLE:\\
+normal=lightgray,black:\\
+selected=black,green"
+.fi
+.PP
+.SH FILES
+.I %pkgdatadir%/mc.hlp
+.IP
+The help file for the program.
+.PP
+.I %pkgdatadir%/mc.ini
+.IP
+The default system\-wide setup for GNU Midnight Commander, used only if
+the user's own ~/.config/mc/ini file is missing.
+.PP
+.I %pkgdatadir%/mc.lib
+.IP
+Global settings for the Midnight Commander.  Settings in this file
+affect all users, whether they have ~/.config/mc/ini or not.
+.PP
+.I ~/.config/mc/ini
+.IP
+User's own setup.  If this file is present, the setup is loaded from
+here instead of the system\-wide startup file.
+.PP
+.SH LICENSE
+This program is distributed under the terms of the GNU General Public
+License as published by the Free Software Foundation.  See the built\-in
+help of the Midnight Commander for details on the License and the lack
+of warranty.
+.SH AVAILABILITY
+The latest version of this program can be found at
+http://ftp.midnight\-commander.org/.
+.SH SEE ALSO
+mc(1), mcedit(1), mcview(1)
+.PP
+.SH BUGS
+Bugs should be reported to https://www.midnight\-commander.org/.