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Fix imenu support for older versions
lisp-mode-symbol-regexp was not defined in Emacs 24.5.
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@ -177,6 +177,9 @@ Must be set before loading use-package."
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:group 'use-package)
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(when use-package-enable-imenu-support
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;; Not defined in Emacs 24
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(defvar lisp-mode-symbol-regexp
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"\\(?:\\sw\\|\\s_\\|\\\\.\\)+")
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(add-to-list
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'lisp-imenu-generic-expression
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(list "Package"
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