[PATCH 00/18] git-remote-mediawiki: Follow perlcritic's recommandations

Hi,
This series of commits intends to follow most of perlcritic's recommandations
in order to make the code more maintainable and readable.
I followed most recommandations from level 5 (most critical ones )to 2, but 
left a great part of the level 1 ones, as they were more about personal choices
of coding style and less about actually improving maintainability and preventing
bugs. Among those I did *not* take into account were:
- ValuesAndExpressions::ProhibitNoisyQuotes: use q(*) instead of '*' for quoting
  some characters
- RegularExpressions::ProhibitEnumeratedClasses: e.g., use [0-9] instead of \d
- CodeLayout::ProhibitParensWithBuiltins: don't use parentheses with builtin
  functions
- RegularExpressions::RequireExtendedFormatting, 
  RegularExpressions::RequireDotMatchAnything and
  RegularExpressions::RequireLineBoundaryMatching: use s, m and x flags for
  *every* regexp
- and some others. Run perlcritic -1 on patched file to so what is left.
Please tell me if you think some of them should be applied anyway.

On the other hand, if quite not sure of the relevance of some commits:
- Add newline in the end of die() error messages [3/18]: are die() messages
  correctly handled already?
- Place the open() call inside the do{} struct and prevent failing close
  [17/18]: current code fails to close the filehandle (try adding a 
  "or warn(..)" after the close() to check this). However, perlcritic complains
  as well if you don't put an explicit close(), which fails when you put it.
  I'm not sure of what's happening and what's the best solution for this.

I checked Documentation/CodingGuidelines and none of these modifications should contradict it. This is my first patch, so don't hesitate to point to me anything wrong with it.

Célestin Matte (18):
  Follow perlcritic's recommendations - level 5 and 4
  Change style of some regular expressions to make them clearer
  Add newline in the end of die() error messages
  Prevent local variable $url to have the same name as a global
    variable
  Turn double-negated expressions into simple expressions
  Remove unused variable
  Rename a variable ($last) so that it does not have the name of a
    keyword
  Explicitely assign local variable as undef and make a proper
    one-instruction-by-line indentation
  Check return value of open and remove import of unused open2
  Put long code into a submodule
  Modify strings for a better coding-style
  Brace file handles for print for more clarity
  Remove "unless" statements and replace them by negated "if"
    statements
  Don't use quotes for empty strings
  Put non-trivial numeric values (e.g., different from 0, 1 and 2) in
    constants.
  Fix a typo ("mediwiki" instead of "mediawiki")
  Place the open() call inside the do{} struct and prevent failing
    close
  Clearly rewrite double dereference

 contrib/mw-to-git/git-remote-mediawiki.perl |  558 ++++++++++++++-------------
 1 file changed, 298 insertions(+), 260 deletions(-)