[src/trunk]: src/bin/sh Restore some (*roff) comments deleted in previous (pa...

[kre <kre%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/496721bdc341
branches:  trunk
changeset: 360551:496721bdc341
user:      kre <kre%NetBSD.org@localhost>
date:      Fri Mar 16 11:53:57 2018 +0000

description:
Restore some (*roff) comments deleted in previous (partially unshave
the yak) for which the purpose was misunderstood.   But trim one more hair.

diffstat:

 bin/sh/sh.1 |  32 ++++++++++++++++----------------
 1 files changed, 16 insertions(+), 16 deletions(-)

diffs (118 lines):

diff -r 9a93168d8ad4 -r 496721bdc341 bin/sh/sh.1
--- a/bin/sh/sh.1       Fri Mar 16 11:19:24 2018 +0000
+++ b/bin/sh/sh.1       Fri Mar 16 11:53:57 2018 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: sh.1,v 1.194 2018/03/16 11:19:24 kre Exp $
+.\"    $NetBSD: sh.1,v 1.195 2018/03/16 11:53:57 kre Exp $
 .\" Copyright (c) 1991, 1993
 .\"    The Regents of the University of California.  All rights reserved.
 .\"
@@ -286,7 +286,7 @@
 .Ar command_string
 operand instead of, or in addition to, from the standard input.
 Special parameter
-.Dv 0
+.Dv 0  \" $0
 will be set from the
 .Ar command_name
 operand if given, and the positional parameters
@@ -1005,7 +1005,7 @@
 .Pp
 When a shell function is executed, all of the shell positional parameters
 (note: excluding
-.Li 0 ,
+.Li 0 ,        \" $0
 which is a special, not positional, parameter, and remains unchanged)
 are set to the arguments of the shell function.
 The variables which are explicitly placed in the environment of
@@ -1593,7 +1593,7 @@
 .Dq $
 can only refer to one of the first 9 positional parameters,
 or the special parameter
-.Dv 0 .
+.Dv 0 .        \" $0
 The word
 .Dq Li $10
 is treated identically to
@@ -1618,13 +1618,13 @@
 if
 .Ev IFS
 is unset.
-.It Dv @
+.It Dv @       \" $@
 Expands to the positional parameters, starting from one.
 When the expansion occurs within double quotes, each positional
 parameter expands as a separate argument.
 If there are no positional parameters, the
 expansion of @ generates zero arguments, even when
-.Dv @
+.Dv $@
 is double-quoted.
 What this basically means, for example, is
 if
@@ -1667,7 +1667,7 @@
 Once set, the value of
 .Dq Dv \&!
 will be retained until another background command is started.
-.It Dv 0 No (zero)
+.It Dv 0 No (zero)     \" $0
 Expands to the name of the shell or shell script.
 .El
 .\"
@@ -1684,7 +1684,7 @@
 create multiple fields from a single word.
 The single exception to this
 rule is the expansion of the special parameter
-.Dv @
+.Dv @  \" $@
 within double quotes, as was described above.
 .Pp
 The order of word expansion is:
@@ -1765,7 +1765,7 @@
 .It
 field splitting is not performed on the results of the
 expansion, with the exception of the special rules for
-.Dv @ .
+.Dv @ .        \" $@
 .El
 .Pp
 In addition, a parameter expansion where braces are used,
@@ -1839,7 +1839,7 @@
 If parameter is
 .Dv *
 or
-.Dv @ ,
+.Dv @ ,        \" $@
 the result of the expansion is unspecified.
 Enclosing the full parameter expansion string in double quotes does not
 cause the following four varieties of pattern characters to be quoted,
@@ -2877,15 +2877,15 @@
 be altered, and later, when the function completes, be restored.
 .Pp
 Note that the positional parameters
-.Li 1 ,
-.Li 2 ,
+.Li 1 ,        \" $1
+.Li 2 ,        \" $2
 \&... (see
 .Sx Positional Parameters ) ,
 and the special parameters
-.Li \&# ,
-.Li \&*
+.Li \&# ,      \" $#
+.Li \&*                \" $*
 and
-.Li \&@
+.Li \&@                \" $@
 (see
 .Sx Special Parameters ) ,
 are always made local in all functions, and are reset inside the
@@ -3172,7 +3172,7 @@
 If
 .Ar signal
 is
-.Li 0
+.Li 0  \" $0
 or its equivalent,
 .Li EXIT ,
 the action is executed when the shell exits.