document count option (and imply unique)

[git-grep-footer.git] / git-grep-footer

diff --git a/git-grep-footer b/git-grep-footer
index fa417c114bb41bf8ad9604a7665eb56ae2e0235d..b676ab8aef983e241ffb59921849d94075dd889d 100755 (executable)
--- a/git-grep-footer
+++ b/git-grep-footer
@@ -23,7 +23,7 @@ GetOptions(\my %opt,
 local $| = 1;
 local $/ = "\0";
 
-my $HEADERMATCH = qr/ [a-z]+ (?: (?:-\w+)+ | \ by ) /ix;
+my $HEADERMATCH = qr/ [a-z]+ (?: (?:-\w+)+ | \ by ) | cc | reference /ix;
 
 my (%headercount, @headercache);
 
@@ -40,12 +40,12 @@ while (readline) {
        # if invalid, assume it's latin1
               $_ = decode(cp1252 => $_) if $@;
 
-       my $prefix = 0;
        my %attr;
 
        BLOCK:
        for (reverse split /\n\n/) {
                my @headers;
+               my $prefix = 0;
 
                LINE:
                for (split /\n/) {
@@ -85,7 +85,7 @@ while (readline) {
                                        }{<...>}imsx;
                                }
                                when (['var', 'vars', '']) {
-                                       when ($header[0] =~ /[ _-] (?: by | to ) $/imsx) {
+                                       when ($header[0] =~ /[ _-] (?: by | to ) $ | ^cc$/imsx) {
                                                $header[1] = undef;
                                        }
                                        for ($header[1]) {
@@ -125,7 +125,7 @@ while (readline) {
                        my $line = $_->[2] // join(': ', @$_);
                        $line =~ s/^/$hash / if defined $hash;
 
-                       if (defined $opt{min} or $opt{max}) {
+                       if (defined $opt{min} or $opt{max} or $opt{count}) {
                                my $counter = \$headercount{ $_->[0] }->{ $_->[1] // '' };
                                my $excess = $$counter++ - ($opt{min} // 0);
                                next if $excess >= ($opt{max} || 1);
@@ -163,6 +163,7 @@ a common convention to list custom metadata such as
 C<Signed-off-by> and C<Acked-by>.
 
 Sections are identified by at least one leading keyword containing a dash
+(or exceptionally recognised)
 followed by a colon.
 
 =head1 OPTIONS
@@ -210,6 +211,11 @@ The original line is given for each match,
 but simplifications still apply for duplicate determination.
 Additional samples are optionally given upto the given maximum.
 
+=item -c, --count
+
+Prefixes (unique) lines by the number of occurrences.
+Causes output to be buffered until all input has been read (obviously).
+
 =back
 
 =head1 AUTHOR