Re: svn URL semantics help

Duncan Murdoch wrote:
> On 4/22/2006 12:25 PM, Keng Lam wrote:
>> The usage of URL appears to be confusing to me with SVN clients. Please
>> let me know if I missed something here -
>>
>> I am trying to understand the svn commands that take URL as a parameter
>> for instance svn copy command. So if I try:
>>
>> $ svn copy https://dodo/trunk http://mipo/tags/t1
>> subversion/libsvn_client/copy.c:357: (apr_err=200007)
>> svn: Source and dest appear not to be in the same repository (src:
>> 'https://dodo/trunk'; dst: 'http://mipo/tags/t1')
>>
>> Basically I can't copy across repository. I can only copy relative to
>> my current svn repos. If that is the case what's the point of
>> having a URL in the destination of commands like copy/mkdir/move ?
>
> I think it's just a simple way to indicate that you want to do a
> repository copy, rather than touching the working copy. It could be
> done by inventing some new syntax, e.g.
>
> svn copy repos:/trunk repos:/tags/t1
I agree its confusing the way the current syntax stands. Syntax appears
to suggest possibilities
(cross repos copies) that do not make sense as described by Duncan.

Perhaps in future it may be nice to consider the possibility of using
"r" commands like CVS.
For example in the CVS parlance, "rtag" is different from "tag". The
"r" indicates remote server-side
action. Subversion could use "rcopy" to indicate server-side action
without inventing any
new flags.

Best Regards,

-- 
Rahul Bhargava,
Subversion,CVS Solutions
WANdisco,Inc.
Pleasanton, CA
http://www.wandisco.com
>
> to save typing, but this is hardly worth the trouble:  if you want it, 
> you can do it yourself using environment variables.  For example,
>
> REPOS=https://dodo
> svn copy $REPOS/trunk $REPOS/tags/t1
>
> The question of why you can't copy between repositories is different.  
> I  think that's because it would be impossible to maintain history 
> across such a copy.  Since "svn copy" is supposed to maintain history, 
> it can't possibly work.
>>
>> Did I miss something or SVN semantics with dest URL are confusing ? 
>> If I can copy
>> only relative to the current repos, won't it be more intutive to have 
>> a relative
>> path option with appropriate flags to indicate that a server-side 
>> operation needs
>> to be triggered as opposed to using an open-ended URL semantics ?
>
> The flags would need to be applied to each argument, since you've got 
> both src and dest that could be in the repository.  I don't think 
> there are any other cases in SVN syntax where flags apply to 
> arguments.  They apply to the command as a whole.
>
> Duncan Murdoch
>
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