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Add more test examples, including expression negation

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Closes #4383

(cherry picked from commit ff66d2f3c1)
This commit is contained in:
Mahmoud Al-Qudsi 2017-10-08 02:06:48 +02:00
parent d4ed2ca447
commit 04c69932e2
1 changed files with 16 additions and 0 deletions
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16
doc_src/test.txt
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@ -139,6 +139,22 @@ if test $status -eq 0
end
\endfish
The previous test can likewise be inverted:
\fish
if test ! $status -eq 0
echo "Previous command failed"
end
\endfish
which is logically equivalent to the following:
\fish
if test $status -ne 0
echo "Previous command failed"
end
\endfish
\subsection test-standards Standards
`test` implements a subset of the <a href="http://www.unix.com/man-page/POSIX/1/test/">IEEE Std 1003.1-2008 (POSIX.1) standard</a>. The following exceptions apply: