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bash prompt: don't use '+=' operator in show upstream code path
The '+=' operator is not supported by old Bash versions (3.0) we still care about. Signed-off-by: SZEDER Gábor <szeder@ira.uka.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -110,7 +110,7 @@ __git_ps1_show_upstream ()
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;;
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svn-remote.*.url)
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svn_remote[$((${#svn_remote[@]} + 1))]="$value"
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svn_url_pattern+="\\|$value"
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svn_url_pattern="$svn_url_pattern\\|$value"
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upstream=svn+git # default upstream is SVN if available, else git
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;;
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esac
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