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If I decrement my octal number so that it wraps around Vim adds length to this number.
Can the length added be configured?
Example:
00 Decrement with Ctrl-X gives

01777777777777777777777

Even if I have a octal byte
000000000 it gets lengthened to 01777777777777777777777
event though I think it should still be the same byte length after wrapping.

Eg. 01777777

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1 Answer 1

Reset to default
5

Solution

(only for decimal, not for octal)

You can simply add unsigned to your nrformat:

:set nrformats+=unsigned

See :help nrformats for more info

Explanation

Because your Vim uses 64bit.

The highest values you can store in 64-bit:

In decimal it is 2^64 - 1 or:

18446744073709551615

If you convert this now to octal, it's this:

01777777777777777777777

And for binary:

0b1111111111111111111111111111111111111111111111111111111111111111

Hope that helps :)

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4
  • Thanks for the answer. Is there any way to prevent this from happening? I would class this as a bug as it changes the length of the number being edited in a non-predictable way.
    – Gustav Blomqvist
    Jan 26 at 12:33
  • I am currently in a restaurant, as soon as I am home I am gonna extend my question and put some resources. And yes that is unexpected behaviour, but also expected and sertainly not a Bug:)
    – Pixelbog
    Jan 26 at 12:38
  • 1
    @GustavBlomqvist Okay I have updated my answer and found a solution. That at least works for decimal :)
    – Pixelbog
    Jan 26 at 15:48
  • Hey, would you mind to accept my answer? I really want that 15 points :')
    – Pixelbog
    Aug 15 at 7:57

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