Split brain: Make clogp_authline capable of returning individual pieces (nfc)

We are going to want this (so that we can set GIT_... variables to the
pieces to make git construct commits the way we want).

Both current call sites provide scalar context, so no functional
change.

diff --git a/dgit b/dgit
index e30a7889fa014710e8436af7e0d0bddaa9f60702..79e0cc53289564d9cef46f459adaa1f3ccfd57eb 100755 (executable)
--- a/dgit
+++ b/dgit
@@ -1321,6 +1321,7 @@ sub clogp_authline ($) {
     $authline =~ m/$git_authline_re/o or
        fail "unexpected commit author line format \`$authline'".
        " (was generated from changelog Maintainer field)";
+    return ($1,$2,$3) if wantarray;
     return $authline;
 }