GNU GRUB - Bugs: bug #48752, Simple arithmetic functionality
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bug #48752: Simple arithmetic functionality
Submitter: | Mirko Vogt <mirco> | ||
Submitted: | Wed 10 Aug 2016 07:50:47 PM UTC | ||
Category: | None | Severity: | Major |
Priority: | 3 - Low | Item Group: | Feature Request |
Status: | None | Privacy: | Public |
Assigned to: | None | Originator Name: | |
Open/Closed: | Open | Release: | Git master |
Release: | Reproducibility: | Every Time | |
Planned Release: | 2.03+ |
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Depends on the following items: None found
Items that depend on this one: None found
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Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2016-10-11 | phcoder | Priority | 5 - Normal | 3 - Low | |
Planned Release | None | 2.03+ |
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I'd like to ask for very basic arithmetic functionality for the scripting engine of GRUB, mainly addition / subtraction, maybe even some more by e.g. taking over code from `let` or the `$((..))` syntax from *sh.
Very concrete use case would be a typical ping-pong scenario:
Counting (failed) boot attempts, storing them in the GRUB environment block and switching to a failsafe / second-system / you-name-it, once booting into a system failed `n` times.
Yes, this can be done without arithmetic operation.
But apart from it "just not being nice" (however I think nice - as in: readable - code is quite a point for the essential part of booting a system), I can think of quite a few other scenarios where basic arithmetic would really add to GRUB.
Thank you for having read my feature request till the end :)