[pkg-bioc] Correct uscan/watch pattern for CRAN packages

[Rafael Laboissiere]

Dirk,

I noticed that the patterns in the debian/watch files for the r-cran-*
packages is not correct.  For instance, nlme has:

    http://cran.r-project.org/src/contrib/nlme_([-0-9\.]*).tar.gz

This results in the follwing:

======================================================================
$ uscan --verbose
-- Scanning for watchfiles in .
-- Found watchfile in ./debian
-- In debian/watch, processing watchfile line:
   http://cran.r-project.org/src/contrib/nlme_([-0-9\.]*).tar.gz
-- Found the following matching hrefs:
     nlme_3.1-60.tar.gz
Newest version on remote site is 3.1-60, local version is 3.1.55
 => remote site does not even have current version
-- Scan finished
======================================================================    


The pattern must be changed to the following:

    http://cran.r-project.org/src/contrib/nlme_([\d\.]*)-(\d+).tar.gz

The parenthesized RE are joined with periods and this gives the expected
behavior:

======================================================================
$ uscan --verbose
-- Scanning for watchfiles in .
uscan: No debian directories found
$ cd ..
$ uscan --verbose
-- Scanning for watchfiles in .
-- Found watchfile in ./debian
-- In debian/watch, processing watchfile line:
   http://cran.r-project.org/src/contrib/nlme_([\d\.]*)-(\d+).tar.gz
-- Found the following matching hrefs:
     nlme_3.1-60.tar.gz
Newest version on remote site is 3.1.60, local version is 3.1.55
 => Newer version available from
    http://cran.r-project.org/src/contrib/nlme_3.1-60.tar.gz
-- Downloading updated package nlme_3.1-60.tar.gz
======================================================================

I did not checked carefully, but it seems that cran2deb does not create a
debian/watch file automatically.  If I have some time in the near future, i
will try to implement this.

-- 
Rafael