If both full-locale-name and short-locale-name searches

fail, look the manpage in the en.<charset> subdirectory.

See the manpage for details.

Suggested by:	ache

2 files changed, 98 insertions, 32 deletions

diff --git a/gnu/usr.bin/man/man/man.c b/gnu/usr.bin/man/man/man.c
index 3ae0bbc..03000bd 100644
--- a/gnu/usr.bin/man/man/man.c
+++ b/gnu/usr.bin/man/man/man.c
@@ -1597,6 +1597,11 @@ man (name)
 	      snprintf(buf, sizeof(buf), "%s/%s", *mp, short_locale);
 	      if (is_directory (buf))
 		l_found = try_section (buf, section, name, glob);
+	      if (!l_found && (*short_locale != 'e' || *(short_locale + 1) != 'n')) {
+		snprintf(buf, sizeof(buf), "%s/en.%s", *mp, short_locale + 3);
+		if (is_directory (buf))
+		  l_found = try_section (buf, section, name, glob);
+	      }
 	    }
 	    locale_opts = NULL;
 	  }
@@ -1634,6 +1639,11 @@ man (name)
 		  snprintf(buf, sizeof(buf), "%s/%s", *mp, short_locale);
 		  if (is_directory (buf))
 		    l_found = try_section (buf, *sp, name, glob);
+		  if (!l_found && (*short_locale != 'e' || *(short_locale + 1) != 'n')) {
+		    snprintf(buf, sizeof(buf), "%s/en.%s", *mp, short_locale + 3);
+		    if (is_directory (buf))
+		      l_found = try_section (buf, *sp, name, glob);
+		  }
 		}
 		locale_opts = NULL;
 	      }
diff --git a/gnu/usr.bin/man/man/man.man b/gnu/usr.bin/man/man/man.man
index 63d21ee..fd5654b 100644
--- a/gnu/usr.bin/man/man/man.man
+++ b/gnu/usr.bin/man/man/man.man
@@ -21,7 +21,7 @@
 .Nm man
 .Nd format and display the on-line manual pages
 .Sh SYNOPSIS
-.Nm man
+.Nm
 .Op Fl adfhkotw
 .Op Fl m Ar system
 .Op Fl p Ar string
@@ -39,7 +39,8 @@ and
 .Ev PAGER
 environment variables, so you can have
 your own set(s) of personal man pages and choose whatever program you
-like to display the formatted pages.  If section is specified, man
+like to display the formatted pages.  If section is specified,
+.Nm
 only looks in that section of the manual.  You may also specify the
 order to search the sections for entries and which preprocessors to
 run on the source files via command line options or environment
@@ -50,13 +51,22 @@ space.
 The options are as follows:
 .Bl -tag -width Fl
 .It Fl M Ar path
-Specify an alternate manpath.  By default, man uses
-.Nm manpath
+Specify an alternate manpath.
+By default,
+.Nm
+uses
+.Xr manpath 1
+(which is built into the
+.Nm
+binary)
 to determine the path to search.  This option overrides the
 .Ev MANPATH
 environment variable.
 .It Fl P Ar pager
-Specify which pager to use.  By default, man uses
+Specify which pager to use.
+By default,
+.Nm
+uses
 .Nm %pager% ,
 This option overrides the
 .Ev PAGER
@@ -67,8 +77,12 @@ This option overrides the
 .Ev MANSECT
 environment variable.
 .It Fl a
-By default, man will exit after displaying the first manual page it
-finds.  Using this option forces man to display all the manual pages
+By default,
+.Nm
+will exit after displaying the first manual page it
+finds.  Using this option forces
+.Nm
+to display all the manual pages
 that match
 .Ar name ,
 not just the first.
@@ -87,32 +101,62 @@ Equivalent to
 Specify an alternate set of man pages to search based on the system
 name given.
 .It Fl o
-Use original, non-localized manpages. By default, man searches
-for localized subdirectories of each manpath component, subdirectory
-name is determined by the
-.Ev LANG
-or
-.Ev LC_CTYPE
-environment variables.
-Localized directory name builded
-using following rule: directory name
-merged with
-.Ev LC_CTYPE
+Look for original, non-localized manpages only.
+.Pp
+By default,
+.Nm
+searches for a localized manpage
+in a set of locale subdirectories of each
+.Xr manpath 1
+component.
+.Pp
+Locale name is taken from the first of three environment variables
+with a nonempty value:
+.Ev LC_CTYPE , LC_ALL ,
 or
-.Ev LANG
-environment variable value.
-If
-.Ev LC_CTYPE
-has no value, then
-.Ev LANG
-variable value will be used. If both
-these variables have no value, then no actions will be performed.
+.Ev LANG ,
+in the specified order.
+.Pp
+If the value could not be determined, or is not a valid locale name,
+then only non-localized manpage will be looked up.
+.Pp
+Otherwise,
 .Nm
-can handle long and short notations of localized directory names. Long notation
-means that directory has name "path/<lang>_<country>.<charset>", for
-example ".../man/ru_RU.KOI8-R". Short notation "path/<lang>.<charset>", for
-example ".../man/ru.KOI8-R". Short notation have priority over
-long one.
+will search in the following subdirectories, in the order of precedence:
+.Pp
+.Bl -item -offset indent -compact
+.Sm off
+.It
+.Pa <lang> _ <country> . <charset>
+.It
+.Pa <lang> . <charset>
+.It
+.Pa en . <charset>
+.Sm on
+.El
+.Pp
+For example, for
+.Dq de_DE.ISO_8859-1
+locale,
+.Nm
+will search in the following subdirectories of the
+.Pa /usr/share/man
+manpath component:
+.Pp
+.Bl -item -offset indent -compact
+.It
+.Pa /usr/share/man/de_DE.ISO_8859-1
+.It
+.Pa /usr/share/man/de.ISO_8859-1
+.It
+.Pa /usr/share/man/en.ISO_8859-1
+.El
+.Pp
+Finally,
+if the search of localized manpage fails,
+it will be looked up in the default
+.Pa /usr/share/man
+directory.
 .It Fl p Ar string
 Specify the sequence of preprocessors to run before nroff or troff.
 Not all installations will have a full set of preprocessors.
@@ -139,16 +183,19 @@ the files that would be formatted or displayed.
 If
 .Ev MANPATH
 is set, its value is used as the path to search for manual pages.
+.Pp
 .It Ev MANROFFSEQ
 If
 .Ev MANROFFSEQ
 is set, its value is used to determine the set of preprocessors run
 before running nroff or troff.  By default, pages are passed through
 the table preprocessor before nroff.
+.Pp
 .It Ev MANSECT
 If
 .Ev MANSECT
 is set, its value is used to determine which manual sections to search.
+.Pp
 .It Ev PAGER
 If
 .Ev PAGER
@@ -156,17 +203,24 @@ is set, its value is used as the name of the program to use to display
 the man page.  By default,
 .Nm %pager%
 is used.
+.Pp
+.It Ev LC_CTYPE
+.It Ev LC_ALL
+.It Ev LANG
+Preferred language for manual pages.
 .El
 .Sh EXAMPLES
 .Pp
 Normally, to look at the relevant manpage information for getopt,
 one would use:
+.Pp
 .Dl man getopt
 .Pp
 However, when referring to a specific section of the manual,
 such as
 .Xr getopt 3 ,
 one would use:
+.Pp
 .Dl man 3 getopt
 .Sh SEE ALSO
 .Xr apropos 1 ,
@@ -180,4 +234,6 @@ one would use:
 .Sh BUGS
 The
 .Fl t
-option only works if a troff-like program is installed.
+option only works if the
+.Xr troff 1 Ns -like
+program is installed.