0001442: Improvement to getopts example, remove double negation

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Category

Severity

Type

Date Submitted

Last Update

0001442

[1003.1(2016/18)/Issue7+TC2] Shell and Utilities

Comment

Enhancement Request

2021-01-10 13:10

2021-11-25 16:08

Reporter

andras_farkas

View Status

public

Assigned To

Priority

normal

Resolution

Accepted

Status

Applied

Name

Andras Farkas

Organization

User Reference

Section

getopts

Page Number

2840

Line Number

93538 and 93541

Interp Status

---

Final Accepted Text

Summary

0001442: Improvement to getopts example, remove double negation

Description

On getopts's page
https://pubs.opengroup.org/onlinepubs/9699919799/utilities/getopts.html [^]
The example uses interesting double negation in the two tests:
if [ ! -z "$aflag" ]; then
if [ ! -z "$bflag" ]; then
! -z could be shortened to -n

Desired Action

Replace
if [ ! -z "$aflag" ]; then
with
if [ -n "$aflag" ]; then
and
if [ ! -z "$bflag" ]; then
with
if [ -n "$bflag" ]; then

Tags

tc3-2008

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Issue History
Date Modified	Username	Field	Change
2021-01-10 13:10	andras_farkas	New Issue
2021-01-10 13:10	andras_farkas	Name	=> Andras Farkas
2021-01-10 13:10	andras_farkas	Section	=> getopts
2021-01-10 22:42	Don Cragun	Page Number	=> 2840
2021-01-10 22:42	Don Cragun	Line Number	=> 93538 and 93541
2021-01-10 22:42	Don Cragun	Interp Status	=> ---
2021-10-28 15:48	Don Cragun	Status	New => Resolved
2021-10-28 15:48	Don Cragun	Resolution	Open => Accepted
2021-10-28 15:48	Don Cragun	Tag Attached: tc3-2008
2021-11-25 16:08	geoffclare	Status	Resolved => Applied

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