Re: [PATCH v2 22/22] git-remote-mediawiki: Clearly rewrite double dereference

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On Fri, Jun 7, 2013 at 5:42 PM, Célestin Matte
<celestin.matte@xxxxxxxxxx> wrote:
> @$var structures are re-written in the following way: @{$var}
> It makes them more readable.
>
> Signed-off-by: Célestin Matte <celestin.matte@xxxxxxxxxx>
> Signed-off-by: Matthieu Moy <matthieu.moy@xxxxxxxxxxxxxxx>
> ---
>  contrib/mw-to-git/git-remote-mediawiki.perl |   12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/contrib/mw-to-git/git-remote-mediawiki.perl b/contrib/mw-to-git/git-remote-mediawiki.perl
> index be860c8..a13c33f 100755
> --- a/contrib/mw-to-git/git-remote-mediawiki.perl
> +++ b/contrib/mw-to-git/git-remote-mediawiki.perl
> @@ -234,7 +234,7 @@ sub get_mw_tracked_pages {
>  sub get_mw_page_list {
>         my $page_list = shift;
>         my $pages = shift;
> -       my @some_pages = @$page_list;
> +       my @some_pages = @{$page_list};
>         while (@some_pages) {
>                 my $last_page = $SLICE_SIZE;
>                 if ($#some_pages < $last_page) {
> @@ -736,7 +736,7 @@ sub import_file_revision {
>
>         print {*STDOUT} "commit refs/mediawiki/${remotename}/master\n";
>         print {*STDOUT} "mark :${n}\n";
> -       print {*STDOUT} "committer ${author} <${author}\@${wiki_name}> " . $date->epoch . " +0000\n";
> +       print {*STDOUT} "committer ${author} <${author}\@{${wiki_name}}> " . $date->epoch . " +0000\n";

In this case, \@ is a literal '@' in the string, so it is not a @$var
reference, thus this change is incorrect.

>         literal_data($comment);
>
>         # If it's not a clone, we need to know where to start from
> @@ -762,7 +762,7 @@ sub import_file_revision {
>                 print {*STDOUT} "reset refs/notes/${remotename}/mediawiki\n";
>         }
>         print {*STDOUT} "commit refs/notes/${remotename}/mediawiki\n";
> -       print {*STDOUT} "committer ${author} <${author}\@${wiki_name}> " . $date->epoch . " +0000\n";
> +       print {*STDOUT} "committer ${author} <${author}\@{${wiki_name}}> " . $date->epoch . " +0000\n";

Ditto: \@ is a literal '@' in the string.

>         literal_data('Note added by git-mediawiki during import');
>         if (!$full_import && $n == 1) {
>                 print {*STDOUT} "from refs/notes/${remotename}/mediawiki^0\n";
> @@ -884,7 +884,7 @@ sub mw_import_revids {
>         my $n_actual = 0;
>         my $last_timestamp = 0; # Placeholer in case $rev->timestamp is undefined
>
> -       foreach my $pagerevid (@$revision_ids) {
> +       foreach my $pagerevid (@{$revision_ids}) {
>                 # Count page even if we skip it, since we display
>                 # $n/$total and $total includes skipped pages.
>                 $n++;
> @@ -919,7 +919,7 @@ sub mw_import_revids {
>                 my $page_title = $result_page->{title};
>
>                 if (!exists($pages->{$page_title})) {
> -                       print {*STDERR} "${n}/", scalar(@$revision_ids),
> +                       print {*STDERR} "${n}/", scalar(@{$revision_ids}),
>                                 ": Skipping revision #$rev->{revid} of ${page_title}\n";
>                         next;
>                 }
> @@ -952,7 +952,7 @@ sub mw_import_revids {
>                 # If this is a revision of the media page for new version
>                 # of a file do one common commit for both file and media page.
>                 # Else do commit only for that page.
> -               print {*STDERR} "${n}/", scalar(@$revision_ids), ": Revision #$rev->{revid} of $commit{title}\n";
> +               print {*STDERR} "${n}/", scalar(@{$revision_ids}), ": Revision #$rev->{revid} of $commit{title}\n";
>                 import_file_revision(\%commit, ($fetch_from == 1), $n_actual, \%mediafile);
>         }
>
> --
--
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