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Re: cvs export usage text


From: Mark D. Baushke
Subject: Re: cvs export usage text
Date: Tue, 23 Nov 2004 12:22:11 -0800

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address@hidden writes:

> Since export requires either a tag or a date:

Actually, you may combine a branch tag at a particular date, so
both "-r tag -D <date>" are permitted. It is NOT an either-or 
semantic requirement, it is a one or both requirement.

> src/checkout.c
> line 69 (export usage message)
> 
> the line:
> "Usage: %s %s [-NRfln] [-r rev] [-D date] [-d dir] [-k kopt] module...\n",
> 
> should read:
> (a) "Usage: %s %s [-NRfln] [-r tag | -D date] [-d dir] [-k kopt] 
> module...\n",
> 
> or (gack!):
> (b) "Usage: %s %s [-NRfln] -r tag | -D date [-d dir] [-k kopt] 
> module...\n",
> 
> See the diff usage message for something like (a) above. It is not quite 
> perfect since it seems to imply that a tag or date is not required, only 
> mutually exclusive. The second example (b) could be misinterpreted as a 
> pipe, however. I'm not sure what the proper usage message syntax would be.
> 
> In the lines after that,
> 
> " -r rev  Export revision or tag."
> 
> Is incorrect because export will not accept a numeric revision, only a 
> tag.
> It should be:
> " -r tag  Export a tag."

I suppose that this:

    "Usage: %s %s [-NRfln] [-r tag] [-D date] [-d dir] [-k kopt] module...\n",
...
    "\t-r tag\tExport tag (one of '-r tag' or '-D date' is required).\n"
    "\t-D date\tExport revisions as of date.\n",
...

makes as much sense as anything... but I don't really like it.

> or:
> " -r tag  Export revisions with a symbolic tag."
> 
> or possibly:
> " -r tag  Export a tag. Either '-D date' or '-r tag' must be specified."

Anyone have any better suggestions?

        -- Mark
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