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annotate: display usage information if no filename was given
Signed-off-by: Matthias Kestenholz <matthias@spinlock.ch>
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@ -10,9 +10,10 @@ use warnings;
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use strict;
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use strict;
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use Getopt::Long;
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use Getopt::Long;
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use POSIX qw(strftime gmtime);
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use POSIX qw(strftime gmtime);
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use File::Basename qw(basename dirname);
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sub usage() {
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sub usage() {
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print STDERR 'Usage: ${\basename $0} [-s] [-S revs-file] file [ revision ]
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print STDERR "Usage: ${\basename $0} [-s] [-S revs-file] file [ revision ]
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-l, --long
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-l, --long
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Show long rev (Defaults off)
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Show long rev (Defaults off)
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-t, --time
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-t, --time
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@ -23,7 +24,7 @@ sub usage() {
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Use revs from revs-file instead of calling git-rev-list
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Use revs from revs-file instead of calling git-rev-list
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-h, --help
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-h, --help
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This message.
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This message.
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';
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";
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exit(1);
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exit(1);
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}
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}
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@ -35,7 +36,7 @@ my $rc = GetOptions( "long|l" => \$longrev,
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"help|h" => \$help,
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"help|h" => \$help,
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"rename|r" => \$rename,
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"rename|r" => \$rename,
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"rev-file|S=s" => \$rev_file);
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"rev-file|S=s" => \$rev_file);
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if (!$rc or $help) {
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if (!$rc or $help or !@ARGV) {
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usage();
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usage();
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}
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}
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