[Rpm-maint] [rpm-software-management/rpm] RFE: Handle disttag (#589)

[Ivan Zakharyaschev]

On Sat, 10 Nov 2018, Jeff Johnson wrote:

> In the interest of moving conversations about what character SHOULD be used as a separator for DistTag, I point you at the PCRE regex that has been in use for almost a decade here.
> 
> http://rpm5.org/cvs/fileview?f=rpm/macros/macros.in&v=1.39.2.52
> 
> See the 2 (one commented out) definitions of %evr_tuple_match. Both PCRE's as written  assume a ':' separator for both Epoch and DistTag.

So, that's an interesting coincidence that independemtly from you I 
suggested the same separator/format! I believe this can be viewed as an 
indication that it is nice.

> One can change the PCRE to use a '.' or '-' or '/' or whatever character one wishes to separate the serial representation of the tuple {E,V,R,D} (or T if twiddle-in-version is desired) that is desired.
> 
> So far no one has mentioned the added SuSE inspired twiddle-in-version parsing that is also necessary to handle in dependency strings if DistTag is handled.

I wanted to be concise about the main ideas and not write too much in one 
message. 

> All of the pseudo-regexes mentioned in this issue are incomplete. The PCRE I have pointed out can be used with pcregrep to do try-and-see experimentation with various representations of EVR if DistTag is added.

Thanks!

-- 
Best regards,
Ivan


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