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delcare -a on a nameref in a function modifies nameref instead of target
From: |
Grisha Levit |
Subject: |
delcare -a on a nameref in a function modifies nameref instead of target |
Date: |
Tue, 17 Jul 2018 17:47:20 -0400 |
At global scope this works as expected:
$ declare -n ref=var; declare -a ref=(X); declare -p ref var
declare -n ref="var"
declare -a var=([0]="X")
But in a function, we end up with the nameref variable having both the
`a' and `n' attributes and nothing in the target:
$ f() { declare -n ref=var; declare ref=(X); declare -p ref var; }; f
declare -an ref=([0]="X")
-bash: declare: var: not found
And a slight modification ends up modifying a global variable instead:
$ f() { declare -n ref=var; declare -a ref; ref=(X); declare -p ref
var; }; f; declare -p ref var
declare -an ref=()
-bash: declare: var: not found
declare -a ref=([0]="X")
-bash: declare: var: not found
- delcare -a on a nameref in a function modifies nameref instead of target,
Grisha Levit <=