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GitHub - syohex/emacs-go-eldoc: eldoc for go language
source link: https://github.com/syohex/emacs-go-eldoc
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README.md
go-eldoc.el 
Introduction
go-eldoc.el provides eldoc for Go language. go-eldoc.el shows type information
for variable, functions and current argument position of function.
Screenshot
Argument Type of Function
Variable Type Information
Return Value Type
Dependency
You can install go-mode with package.el from MELPA.
And you can install gocode by go get as below.
% go get -u github.com/nsf/gocode
Installation
You can install go-eldoc.el from MELPA with package.el.
(require 'package) (add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/")) (package-initialize) (package-refresh-contents)
evaluate this code and M-x package-install go-eldoc.
Setup
Call go-eldoc-setup function at go-mode-hook
(require 'go-eldoc) ;; Don't need to require, if you install by package.el
(add-hook 'go-mode-hook 'go-eldoc-setup)Customize
You can change face of current argument position by eldoc-highlight-function-argument
like this.
(set-face-attribute 'eldoc-highlight-function-argument nil :underline t :foreground "green" :weight 'bold)
go-eldoc-gocode(Default: gocode)
gocode location. You need not to set this variable if you set ($GOPATH/bin) to PATH environment variable correctly.
go-eldoc-gocode-args(Default: nil)
Arguments of gocode command. Type of this variable is list of strings.
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