distance to tag

[Kastner Masilko, Friedrich]

> From: mercurial-bounces at selenic.com [mailto:mercurial-bounces at selenic.com] On Behalf Of Johannes Totz
> 
> Indeed! :)
> I need to produce one in the pattern of 1.2.3.4. Build numbers and
> similar stuff are quite annoying to manage, so I thought might as well
> generate that reliably from the repo itself.

I see. We had a use-case here where such a dotversion should be generated from nearest tag with a specific regex, including the distance to it as well as a part of the hash-code to distinguish parallel branches. E.g. the tags to be taken into account would be in the form of "X.Y" with X and Y being numbers. Then the generated dotversion should be X.Y.D.H, with X and Y taken from the nearest tag, D being the distance to this tag and H being the first 2 bytes of the hash interpreted as 16-bit word.

I've implemented an extension that offers a template keyword "dotversion", and a revset function "dotversion(string)" based on settings given in the configuration. This was so you could e.g. do a "hg log -r . --template {dotversion}\n" to get the current parent's dotversion, and do a 'hg log -r "dotversion(1.2.7.22345)"' to search for a certain dotversion.

The extension is quite configurable in terms of format, regex and hash mangling. You could even configure it to only return the distance without tag info or hash at all.

If there is interest in this, I could upload it to my extensions repository at BB.

Regards,
Fritz


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