[PATCH v5 14/15] contrib: related: parse committish like format-patch

[Felipe Contreras <felipe.contreras@xxxxxxxxx>]

Signed-off-by: Felipe Contreras <felipe.contreras@xxxxxxxxx>
---
 contrib/related/git-related | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/contrib/related/git-related b/contrib/related/git-related
index 8394cdc..62c9b56 100755
--- a/contrib/related/git-related
+++ b/contrib/related/git-related
@@ -232,6 +232,20 @@ class Commits
 
   def from_rev_args(args)
     return if args.empty?
+
+    revs = []
+
+    File.popen(%w[git rev-parse --revs-only --default=HEAD --symbolic] + args).each do |rev|
+      revs << rev.chomp
+    end
+
+    case revs.size
+    when 1
+      committish = [ '%s..HEAD' % revs[0] ]
+    else
+      committish = revs
+    end
+
     source = nil
     File.popen(%w[git rev-list --reverse] + args) do |p|
       p.each do |e|
-- 
1.8.3.rc2.542.g24820ba

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