Show imenu index alist in a popup window.

M-x popup-imenu

Control popup horizontal positioning with:

• 'center - open popup at window center
• 'fill-column - center relative to fill-column (default setting)
• 'point - open popup at point

(setq popup-imenu-position 'point)

• 'flat - flatten hierarchical imenu
• 'indent - use whitespace indentation to show hierarchical imenu

(setq popup-imenu-style 'indent)

Flx matching is enabled by default. Disable it with:

(setq popup-imenu-fuzzy-match nil)

(global-set-key (kbd "C-e") 'popup-imenu)

;; Close the popup with same key
(define-key popup-isearch-keymap (kbd "C-e") 'popup-isearch-cancel)

• dash
• popup
• flx-ido