Ticket #40711

Numeric brace expansion containing parameter

Open Date: 2020-09-06 12:03 Last Update: 2023-09-15 00:21

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MileStone:
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3
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3
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Details

We now support expansion like this:

$ set -o braceexpand
$ d=. o=1
$ echo {1${d}${d}3} {${o}..3}
1 2 3 1 2 3

This may possibly be a cause of unexpected expansion, for example, like echo {${var}} where var='1..3'.

On the other hand, it would still be useful if the range of numeric brace expansion could be specified by parameters: echo {${from}..${to}}

So my current opinion is that the braces and dots must be literal (not from parameter expansion) but the numbers can be a parameter.

(This behavior is different from that of other shells, though...)

Ticket History (2/2 Histories)

2020-09-06 12:03 Updated by: magicant
  • New Ticket "Numeric brace expansion containing parameter" created
2023-09-15 00:21 Updated by: magicant
  • Status Update from Open to Closed

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