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| author | Bart Schaefer <schaefer@ipost.com> | 2021-06-13 16:30:06 -0700 |
|---|---|---|
| committer | Bart Schaefer <schaefer@ipost.com> | 2021-06-13 16:30:06 -0700 |
| commit | 5b4a1626c2efbbc4b46e8995e553ec2c14549904 (patch) | |
| tree | d3ee7a205eb0013e2f58e26ec75cad58e3628752 /NEWS | |
| parent | 667901b6ba8ea7871bfdb6364fb14cbcb70536b4 (diff) | |
| download | zsh-5b4a1626c2efbbc4b46e8995e553ec2c14549904.tar.gz zsh-5b4a1626c2efbbc4b46e8995e553ec2c14549904.tar.xz zsh-5b4a1626c2efbbc4b46e8995e553ec2c14549904.zip | |
49069: literal interpretation of subscripts for unset of array/hash elements
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/NEWS b/NEWS index ee97868f9..c12ec3b0e 100644 --- a/NEWS +++ b/NEWS @@ -7,6 +7,18 @@ Note also the list of incompatibilities in the README file. Changes since 5.8 ----------------- +When unsetting a hash element, the string enclosed in square brackets is +interpreted literally after any normal command-line-argument expansions. +Thus + unset "hash[$key]" +first expands $key as usual for a double-quoted string, and then interprets +that result as the exact hash element to unset. This differs from previous +versions of the shell, which would also remove a leading backslash for an +unusual subset of characters in the expansion of $key. Note this also +means, for example, that + unset 'hash[ab]cd]' +unsets the element with key "ab]cd" rather than silently doing nothing. + The function command learnt a -T option to declare a function and enable tracing for it simultaneously. |