perlhack.pod: fix perlbug invocation

In perlhack,

  % perlbug -s "[PATCH] $(git log -1 --format=%s HEAD)" -f 0001-*.patch

is incomplete; --format=%s needs a proper value.
Use --oneline instead, as it also --abbrev(iates) sha1

$ git log --oneline -1
c8dfc96 regexp.h: repair linux perf compilation

Note that HEAD is optional, but just as clear as <branch-name>.

diff --git a/pod/perlhack.pod b/pod/perlhack.pod
index 5e85f4b..f8f8bdd 100644 (file)
--- a/pod/perlhack.pod
+++ b/pod/perlhack.pod
@@ -60,7 +60,7 @@ Assuming your patch consists of a single git commit, you can send it to
 perlbug with this command line:
 
   % git format-patch -1
-  % perlbug -s "[PATCH] $(git log -1 --format=%s HEAD)" -f 0001-*.patch
+  % perlbug -s "[PATCH] $(git log -1 --oneline HEAD)" -f 0001-*.patch
 
 The perlbug program will ask you a few questions about your email
 address and the patch you're submitting. Once you've answered them you