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Anders Kaseorg committed 50b03b0

git-prompt: Document GIT_PS1_DESCRIBE_STYLE

GIT_PS1_DESCRIBE_STYLE was introduced in v1.6.3.2~35. Document it in the
header comments.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

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contrib/completion/git-prompt.sh

 # find one, or @{upstream} otherwise.  Once you have set
 # GIT_PS1_SHOWUPSTREAM, you can override it on a per-repository basis by
 # setting the bash.showUpstream config variable.
+#
+# If you would like to see more information about the identity of
+# commits checked out as a detached HEAD, set GIT_PS1_DESCRIBE_STYLE
+# to one of these values:
+#
+#     contains      relative to newer annotated tag (v1.6.3.2~35)
+#     branch        relative to newer tag or branch (master~4)
+#     describe      relative to older annotated tag (v1.6.3.1-13-gdd42c2f)
+#     default       exactly matching tag
 
 # __gitdir accepts 0 or 1 arguments (i.e., location)
 # returns location of .git repo