From: Harald Hoyer <harald@redhat.com>
Date: Thu, 27 Jul 2017 14:34:25 +0000 (+0200)
Subject: git2spec.pl: handle github merges
X-Git-Tag: 046~21
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ceb910a7332188a6abf920fda9bf5a419aef15d;p=thirdparty%2Fdracut.git

git2spec.pl: handle github merges

found a nice strategy to produce patchset from merges
---

diff --git a/git2spec.pl b/git2spec.pl
index 0d8adb4a1..4b03a95cf 100755
--- a/git2spec.pl
+++ b/git2spec.pl
@@ -3,10 +3,22 @@
 sub create_patches {
     my $tag=shift;
     my $pdir=shift;
-    my $num=0;
-    open( GIT, 'git format-patch -M -N --no-signature -o "'.$pdir.'" '.$tag.' |');
-    @lines=<GIT>;
-    close GIT;         # be done
+    my $n=1;
+    my @lines;
+
+    mkdir $pdir, 0755;
+
+    open( GIT, 'git log -p --pretty=email --stat -m --first-parent --reverse '.$tag.'..HEAD |');
+
+    while (<GIT>) {
+        if (/^From [a-z0-9]{40} .*$/) {
+            my $fname = sprintf("%04d", $n++).".patch";
+            push @lines, $fname;
+            open FH, ">".$pdir."/".$fname;
+        }
+        print FH;
+    }
+
     return @lines;
 };
 
@@ -35,7 +47,7 @@ while(<>) {
 	$num=1;
 	for(@patches) {
 	    s/.*\///g;
-	    print "Patch$num: $_";
+	    print "Patch$num: $_\n";
 	    $num++;
 	}
 	print "\n";