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update emacs instructions

This commit is contained in:
Jeremie Dimino 2013-09-06 13:28:17 +01:00
parent c44ed29355
commit 8665d018ad
1 changed files with 15 additions and 5 deletions
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README.md
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@ -109,16 +109,26 @@ this file by executing:
Integration with emacs
----------------------
To use utop in emacs, add the following line to your ~/.emacs file:
To use utop in emacs, first you need to make sure emacs can find the
command `utop` and the file `utop.el`. If you installed utop via opam
you can copy-paste this code into you `~/.emacs` file:
```scheme
;; Setup environment variables using opam
(dolist (var (car (read-from-string (shell-command-to-string "opam config env --sexp"))))
(setenv (car var) (cadr var)))
;; Update the emacs path
(setq exec-path (split-string (getenv "PATH") path-separator))
;; Update the emacs load path
(push (concat (getenv "OCAML_TOPLEVEL_PATH") "/../../share/emacs/site-lisp") load-path)
;; Automatically load utop.el
(autoload 'utop "utop" "Toplevel for OCaml" t)
```
Then you can run utop by executing the command `utop` in emacs.
If you installed utop through opam, customize `utop-command` to
`opam config exec "utop -emacs"`.
Then you can execute utop inside emacs with: `M-x utop`.
Integration with the tuareg/typerex mode
----------------------------------------