> On 14 Jan 2017, at 20:10, Max Horn <m...@quendi.de> wrote:
> 
> Dear Jerome,
> 
> for some reason I only received your email yesterday -- presumably it was 
> stuck in mailing list moderation? Anyway, better a late answer than non at 
> all :-).

Yes - I've looked at moderating requests yesterday and discovered it there.
> 
>> On 07 Dec 2016, at 16:57, Jerome BENOIT <z0608224008...@rezozer.net> wrote:
>> 
>> Hello Forum,
>> 
>> I have just noticed that Sage[Math] tries to pre-loads the GAP package 
>> `braid',
>> which is not present in the GAP webpage. I guess it is an old GAP package.
>> Can anybody confirm this ? Does anybody knows whether or not this GAP pachage
>> has been replaced/supersedeed ?
> 
> To the best of my knowledge, GAP never bundled a "braid" package. There is an 
> undeposited "package" with that name, see 
> <https://www.gap-system.org/Packages/undep.html>, but (a) that never was 
> shipped together with GAP,

Yes, that's true.

In addition, the MapClass package 
(https://www.gap-system.org/Packages/mapclass.html) 
redistributed with GAP says that it is "an extension of the Braid package for 
GAP"
but it does not require Braid to work. 

> and (b) as far as I can tell, it is just a bunch of GAP source files, not an 
> actual GAP package (i.e. no PackageInfo.g, init.g, read.g etc.).  Well, that 
> said, there is also a broken link which purports to contain a "proper" 
> package, but it points to a location on www.opensourcemath.org, and that 
> domain expired and was taken over by a domain grabber placing ads on it.
> 
> Anyway, if you want to find out why Sage tries to load that package, perhaps 
> ask them? And/or query their version control system to see when (and by whom) 
> the code to load the package was added.

Perhaps authors of Braid and MapClass, if they read the Forum, could give more 
light too.

HTH
Alexander



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