ElDoc box

• Install
• Usage
  • Function
  • Face
  • Hooks
  • Variable
  • Use with eglot
• Credit

This package displays ElDoc documentations in a childframe.

Using with eglot in python-mode

Install

Get the file, add to load path, and

(require 'eldoc-box)

It is also available on MELPA.

Usage

Note: If you use Gnome and Emacs 27, set x-gtk-resize-child-frames to resize-mode to avoid breakage of childframe.

Function

eldoc-box-hover-mode

Display documentation of the symbol at point in a childframe on upper corner.

eldoc-box-hover-at-point-mode

Same as eldoc-box-hover-mode except the childframe is displayed at point, instead of on the upper corner. Note that this mode brings a small but noticeable slowness.

eldoc-box-help-at-point

Display the documentation of the symbol at point in a childframe. This requires Emacs 28. (eldoc-box-hover-mode doesn’t need to be on.)

Face

eldoc-box-border

Adjust :background of this face for border color.

eldoc-box-body

Default face used by childframe. I suggest to use a nice Sans Serif font such as Source Sans Pro, and a lighter or darker background.

Hooks

eldoc-box-buffer-hook

Hook run after buffer for doc is setup.Run inside the new buffer.

eldoc-box-frame-hook

Hook run after doc frame is setup but just before it is made visible.Each function runs inside the child frame and receives the main frame as argument.

Variable

eldoc-box-max-pixel-width & eldoc-box-max-pixel-height

Set them according to the screen resolution of your machine.

eldoc-box-only-multi-line

Set this to non-nil and eldoc-box only display multi-line message in childframe. One line messages are left in minibuffer.

eldoc-box-cleanup-interval

After this amount of seconds will eldoc-box attempt to cleanup the childframe. E.g. if it is set to 1, the childframe is cleared 1 second after you moved the point to somewhere else (that doesn't have a doc to show). This doesn't apply to eldoc-box-hover-at-point-mode, in that mode the childframe is cleared as soon as point moves.

eldoc-box-fringe-use-same-bg

T means fringe's background color is set to as same as that of default. Default to t.

eldoc-box-self-insert-command-list

By default eldoc-box-hover-at-point-mode only keeps childframe display while you are typing (self-insert-command). But if you bind something else to your keys, eldoc-box can’t recognize it and will hide childframe while yu hit that key. Add your command to this list so eldoc-box won’t hide childframe when this command is called.

Use with eglot

As of writing this README, eglot doesn't have a public mode hook, use this hook:

(add-hook 'eglot-managed-mode-hook #'eldoc-box-hover-mode t)

To keep eldoc from displaying documentation at point without enabling any minor mode above: (add-to-list 'eglot-ignored-server-capabilites :hoverProvider).

Credit

• Thanks to for João Távora for some valuable contribution and explain on eldoc and eglot internals.
• This package is initially adapted from Sebastien Chapuis’s package lsp-ui.el.