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mdoc(7) police: markup nits.

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This commit is contained in:
Ruslan Ermilov 2002-05-29 15:18:35 +00:00
parent 3f0e2b01ff
commit 9dfcbc3b12
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=97464
1 changed files with 11 additions and 11 deletions
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22
bin/expr/expr.1
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@ -56,7 +56,7 @@ Arithmetic operations are performed using signed integer math.
If the If the
.Fl e .Fl e
flag is specified, arithmetic uses the C flag is specified, arithmetic uses the C
.Ql intmax_t .Vt intmax_t
data type (the largest integral type available), and data type (the largest integral type available), and
.Nm .Nm
will detect arithmetic overflow and return an error indication. will detect arithmetic overflow and return an error indication.
@ -67,7 +67,7 @@ If
is not specified, arithmetic operations and parsing of integer is not specified, arithmetic operations and parsing of integer
arguments will overflow silently according to the rules of the C arguments will overflow silently according to the rules of the C
standard, using the standard, using the
.Ql long .Vt long
data type. data type.
.Pp .Pp
Operators are listed below in order of increasing precedence; all Operators are listed below in order of increasing precedence; all
@ -126,11 +126,11 @@ Unless the
variable is defined in the process environment, this version of variable is defined in the process environment, this version of
.Nm .Nm
adheres to the adheres to the
.Tn POSIX \*[Px]
Utility Syntax Guidelines, which require that a leading argument beginning Utility Syntax Guidelines, which require that a leading argument beginning
with a minus sign be considered an option to the program. with a minus sign be considered an option to the program.
The standard The standard
.Ql \&-- .Fl Fl
syntax may be used to prevent this interpretation. syntax may be used to prevent this interpretation.
However, many historic implementations of However, many historic implementations of
.Nm , .Nm ,
@ -168,7 +168,7 @@ command in general is historic and inconvenient.
New applications are advised to use shell arithmetic rather than New applications are advised to use shell arithmetic rather than
.Nm . .Nm .
.Sh ENVIRONMENT .Sh ENVIRONMENT
.Bl -tag -compact -width EXPR_COMPAT .Bl -tag -width ".Ev EXPR_COMPAT"
.It Ev EXPR_COMPAT .It Ev EXPR_COMPAT
If set, If set,
.Nm .Nm
@ -185,7 +185,7 @@ The following example (in
.Xr sh 1 .Xr sh 1
syntax) adds one to the variable syntax) adds one to the variable
.Va a : .Va a :
.Dl a=$(expr $a + 1) .Dl "a=$(expr $a + 1)"
.It .It
This will fail if the value of This will fail if the value of
.Va a .Va a
@ -195,10 +195,10 @@ To protect negative values of
from being interpreted as options to the from being interpreted as options to the
.Nm .Nm
command, one might rearrange the expression: command, one might rearrange the expression:
.Dl a=$(expr 1 + $a) .Dl "a=$(expr 1 + $a)"
.It .It
More generally, parenthesize possibly-negative values: More generally, parenthesize possibly-negative values:
.Dl a=$(expr \e( $a \e) + 1) .Dl "a=$(expr \e( $a \e) + 1)"
.It .It
This example prints the filename portion of a pathname stored This example prints the filename portion of a pathname stored
in variable in variable
@ -211,7 +211,7 @@ it is necessary to prevent it from being interpreted as the division operator.
The The
.Li // .Li //
characters resolve this ambiguity. characters resolve this ambiguity.
.Dl expr \*q//$a\*q \&: '.*/\e(.*\e)' .Dl "expr \*q//$a\*q \&: '.*/\e(.*\e)'"
.El .El
.Pp .Pp
The following examples output the number of characters in variable The following examples output the number of characters in variable
@ -228,11 +228,11 @@ If the
command conforms to command conforms to
.St -p1003.1-2001 , .St -p1003.1-2001 ,
this is simple: this is simple:
.Dl expr -- \*q$a\*q \&: \*q.*\*q .Dl "expr -- \*q$a\*q \&: \*q.*\*q"
.It .It
For portability to older systems, however, a more complicated command For portability to older systems, however, a more complicated command
is required: is required:
.Dl expr \e( \*qX$a\*q \&: \*q.*\*q \e) - 1 .Dl "expr \e( \*qX$a\*q \&: \*q.*\*q \e) - 1"
.El .El
.Sh DIAGNOSTICS .Sh DIAGNOSTICS
The The