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Tilde expansion differences between 4.3 and 4.2


From: Ondrej Oprala
Subject: Tilde expansion differences between 4.3 and 4.2
Date: Wed, 14 Jan 2015 15:09:47 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0

reproducer:
cd ~
mkdir MYDIR
cd MYDIR
echo "${PWD/#$HOME/~}"

Result of echo in 4.3:
/home/<user>/MYDIR

Result of echo in 4.2:
~/MYDIR

Is tilde expansion in 4.3 supposed to happen? I don't see any mention in 4.3's compat file, apart from
point 20 which was already present in COMPAT files for older versions.
Does this excerpt from the man page...
"
In each of the cases below, word is subject to tilde expansion, parameter expansion, command substitution, and arithmetic
       expansion.
"
...apply to string in ${parameter/pattern/string} as well? It would make sense, since the other expansions worked on "string" in previous versions.

Thanks,
Ondrej



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