[darcs-users] vc-darcs.el and the length of hashes (cons: Args out of range)

[Ivan Zakharyaschev]

On Tue, 15 Dec 2015, Ivan Zakharyaschev wrote:

> I'm not sure about where this inconsistency comes from. Perhaps, an older 
> version of darcs had a different interface w.r.t. the ids of patches. 
> Understanding this would make it clearer how to proceed with a possible fix 
> (keep both variants or not, check versions,...). Do you have any suggestions?

A stupid fix which works for the newer darcs has been pushed to 
http://hub.darcs.net/imz/vc-darcs_jch/patch/2744a57b44e61a4ab186fe38d8d4645b467ce4e2 
.

> SHA1 is 40 hexadecimal digits long -- https://en.wikipedia.org/wiki/SHA-1 .
>
> And vc-darcs.el tries to get 62 symbols of `h' in `vc-darcs-changes'...
>
> So, is `h' the hash?..
>
>               (let ((h (cdr (assoc 'hash (cadr e)))))
>                 (when h
>                   (push (substring h 0 61) l))))))
>
> Probably, yes. So, something is wrong (40 vs 62)...

-- 
Ivan