Consistently mark std(in|out|err) with .Dv, because that's how they

are marked up in stdio(3), and because they are defined expressions
of type "FILE *".

Approved by:	re

lib/libc/gen/fmtmsg.3

@@ -45,7 +45,7 @@ The
 .Fn fmtmsg
 function displays a detailed diagnostic message, based on
 the supplied arguments, to
-.Em stderr
+.Dv stderr
 and/or the system console.
 .Pp
 The
@@ -64,7 +64,7 @@ may be specified.
 .Bl -tag -width ".Dv MM_CONSOLE"
 .It Dv MM_PRINT
 Output should take place on
-.Em stderr .
+.Dv stderr .
 .It Dv MM_CONSOLE
 Output should take place on the system console.
 .El
@@ -169,13 +169,13 @@ function returns
 upon success,
 .Dv MM_NOMSG
 to indicate output to
-.Em stderr
+.Dv stderr
 failed,
 .Dv MM_NOCON
 to indicate output to the system console failed, or
 .Dv MM_NOTOK
 to indicate output to
-.Em stderr
+.Dv stderr
 and the system console failed.
 .Sh ENVIRONMENT
 The
@@ -184,7 +184,7 @@ The
 environment variable specifies which arguments to
 .Fn fmtmsg
 will be output to
-.Em stderr ,
+.Dv stderr ,
 and in which order.
 .Ev MSGVERB
 should be a colon
@@ -214,7 +214,7 @@ TO FIX: refer to manual BSD:ls:001
 .Ed
 .Pp
 to
-.Em stderr .
+.Dv stderr .
 .Pp
 The same code, with
 .Ev MSGVERB

lib/libc/net/rcmd.3

@@ -105,9 +105,9 @@ a socket in the Internet domain of type
 .Dv SOCK_STREAM
 is returned to the caller, and given to the remote
 command as
-.Em stdin
+.Dv stdin
 and
-.Em stdout .
+.Dv stdout .
 If
 .Fa fd2p
 is non-zero, then an auxiliary channel to a control
@@ -123,10 +123,10 @@ forwarded to the process group of the command.
 If
 .Fa fd2p
 is 0, then the
-.Em stderr
+.Dv stderr
 (unit 2 of the remote
 command) will be made the same as the
-.Em stdout
+.Dv stdout
 and no
 provision is made for sending arbitrary signals to the remote process,
 although you may be able to get its attention by using out-of-band data.

lib/libc/net/rcmdsh.3

@@ -90,7 +90,10 @@ a socket in the
 domain of type
 .Dv SOCK_STREAM
 is returned to the caller, and given to the remote
-command as stdin, stdout, and stderr.
+command as
+.Dv stdin , stdout ,
+and
+.Dv stderr .
 .Sh RETURN VALUES
 The
 .Fn rcmdsh

lib/libc/stdio/fgets.3

@@ -78,7 +78,7 @@ with an infinite
 and a
 .Fa stream
 of
-.Em stdin ,
+.Dv stdin ,
 except that the newline character (if any) is not stored in the string.
 It is the caller's responsibility to ensure that the input line,
 if any, is sufficiently short to fit in the string.

lib/libc/stdio/fopen.3

@@ -164,10 +164,9 @@ The primary use of the
 function
 is to change the file associated with a
 standard text stream
-.Pf ( Em stderr ,
-.Em stdin ,
+.Dv ( stderr , stdin ,
 or
-.Em stdout ) .
+.Dv stdout ) .
 .Sh RETURN VALUES
 Upon successful completion
 .Fn fopen ,

lib/libc/stdio/fputs.3

@@ -68,7 +68,7 @@ writes the string
 .Fa str ,
 and a terminating newline character,
 to the stream
-.Em stdout .
+.Dv stdout .
 .Sh RETURN VALUES
 The
 .Fn fputs

lib/libc/stdio/getwc.3

@@ -78,7 +78,7 @@ function
 is equivalent to
 .Fn getwc
 with the argument
-.Em stdin .
+.Dv stdin .
 .Sh RETURN VALUES
 If successful, these routines return the next wide-character
 from the

lib/libc/stdio/printf.3

@@ -78,7 +78,7 @@ as described below.
 and
 .Fn vprintf
 write output to
-.Pa stdout ,
+.Dv stdout ,
 the standard output stream;
 .Fn fprintf
 and

lib/libc/stdio/putc.3

@@ -84,7 +84,7 @@ macro
 is identical to
 .Fn putc
 with an output stream of
-.Em stdout .
+.Dv stdout .
 .Pp
 The
 .Fn putw

lib/libc/stdio/putwc.3

@@ -78,7 +78,7 @@ function
 is identical to
 .Fn putwc
 with an output stream of
-.Em stdout .
+.Dv stdout .
 .Sh RETURN VALUES
 The
 .Fn fputwc ,

lib/libc/stdio/scanf.3

@@ -80,7 +80,7 @@ The
 .Fn scanf
 function
 reads input from the standard input stream
-.Em stdin ,
+.Dv stdin ,
 .Fn fscanf
 reads input from the stream pointer
 .Fa stream ,

lib/libc/stdio/setbuf.3

@@ -65,7 +65,8 @@ destination file or terminal as soon as written;
 when it is block buffered many characters are saved up and written as a block;
 when it is line buffered characters are saved up until a newline is
 output or input is read from any stream attached to a terminal device
-(typically stdin).
+(typically
+.Dv stdin ) .
 The function
 .Xr fflush 3
 may be used to force the block out early.
@@ -81,10 +82,10 @@ is called,
 and an optimally-sized buffer is obtained.
 If a stream refers to a terminal
 (as
-.Em stdout
+.Dv stdout
 normally does) it is line buffered.
 The standard error stream
-.Em stderr
+.Dv stderr
 is always unbuffered.
 .Pp
 The

lib/libc/stdio/stdio.3

@@ -127,9 +127,9 @@ opened explicitly:
 (for writing diagnostic output).
 .El
 These streams are abbreviated
-.Em stdin , stdout
+.Dv stdin , stdout
 and
-.Em stderr .
+.Dv stderr .
 Initially, the standard error stream
 is unbuffered; the standard input and output streams are
 fully buffered if and only if the streams do not refer to

lib/libc/stdio/wprintf.3

@@ -74,7 +74,7 @@ and
 .Fn vwprintf
 functions
 write output to
-.Pa stdout ,
+.Dv stdout ,
 the standard output stream;
 .Fn fwprintf
 and

lib/libc/stdio/wscanf.3

@@ -82,7 +82,7 @@ The
 .Fn wscanf
 function
 reads input from the standard input stream
-.Em stdin ,
+.Dv stdin ,
 .Fn fwscanf
 reads input from the stream pointer
 .Fa stream ,

lib/libc/stdlib/getopt.3

@@ -145,7 +145,7 @@ function encounters a character not found in the string
 .Va optstring
 or detects
 a missing option argument it writes an error message to the
-.Em stderr
+.Dv stderr
 and returns
 .Ql ?\& .
 Setting

lib/libc/stdlib/malloc.3

@@ -223,7 +223,9 @@ This option is incompatible with the
 option.
 .It X
 Rather than return failure for any allocation function,
-display a diagnostic message on stderr and cause the program to drop
+display a diagnostic message on
+.Dv stderr
+and cause the program to drop
 core (using
 .Xr abort 3 ) .
 This option should be set at compile time by including the following in
@@ -390,7 +392,9 @@ The
 .Va _malloc_message
 variable allows the programmer to override the function which emits
 the text strings forming the errors and warnings if for some reason
-the stderr filedescriptor is not suitable for this.
+the
+.Dv stderr
+file descriptor is not suitable for this.
 Please note that doing anything which tries to allocate memory in
 this function will assure death of the process.
 .Pp

lib/libcompat/4.3/rexec.3

@@ -87,9 +87,9 @@ a socket in the Internet domain of type
 .Dv SOCK_STREAM
 is returned to
 the caller, and given to the remote command as
-.Em stdin
+.Dv stdin
 and
-.Em stdout .
+.Dv stdout .
 If
 .Fa fd2p
 is non-zero, then an auxiliary channel to a control
@@ -108,10 +108,10 @@ verified.
 If
 .Fa fd2p
 is 0, then the
-.Em stderr
+.Dv stderr
 (unit 2 of the remote
 command) will be made the same as the
-.Em stdout
+.Dv stdout
 and no
 provision is made for sending arbitrary signals to the remote process,
 although you may be able to get its attention by using out-of-band data.

lib/libdisk/libdisk.3

@@ -214,7 +214,8 @@ or
 .Fn Clone_Disk .
 .Pp
 .Fn Debug_Disk
-prints the content of the tree to stdout.
+prints the content of the tree to
+.Dv stdout .
 .Pp
 .Fn Set_Bios_Geom
 sets the geometry the bios uses.

lib/libkvm/kvm.3

@@ -83,7 +83,9 @@ issue since any code that manipulates processes is inherently
 machine dependent.
 .Pp
 Finally, the Sun kvm error reporting semantics are poorly defined.
-The library can be configured either to print errors to stderr automatically,
+The library can be configured either to print errors to
+.Dv stderr
+automatically,
 or to print no error messages at all.
 In the latter case, the nature of the error cannot be determined.
 To overcome this, the

lib/libkvm/kvm_open.3

@@ -118,7 +118,9 @@ no errors are reported and the application cannot know the
 specific nature of the failed kvm call.
 If it is not
 .Dv NULL ,
-errors are printed to stderr with
+errors are printed to
+.Dv stderr
+with
 .Fa errstr
 prepended to the message, as in
 .Xr perror 3 .

share/man/man3/assert.3

@@ -50,7 +50,7 @@ and if it is false,
 the calling process is terminated.
 A
 diagnostic message is written to
-.Em stderr
+.Dv stderr
 and the function
 .Xr abort 3
 is called, effectively terminating the program.