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Merge branch 'jc/forbid-symbolic-ref-d-HEAD' into maint
authorJunio C Hamano <gitster@pobox.com>
Mon, 19 Sep 2016 20:51:40 +0000 (13:51 -0700)
committerJunio C Hamano <gitster@pobox.com>
Mon, 19 Sep 2016 20:51:41 +0000 (13:51 -0700)
commitd6645312ff82245a8e9bc8187ad16c57456bff38
treebcbef7c70559fa152cecd06a9242145ecb5c374f
parent4c10c311376ef0cd279dace6a05e2101d60536e4
parent12cfa792b8657cfd37523df83df0a83d987570a5
Merge branch 'jc/forbid-symbolic-ref-d-HEAD' into maint

"git symbolic-ref -d HEAD" happily removes the symbolic ref, but
the resulting repository becomes an invalid one.  Teach the command
to forbid removal of HEAD.

* jc/forbid-symbolic-ref-d-HEAD:
  symbolic-ref -d: do not allow removal of HEAD