I am coding Ocaml with Emacs, at the moment the setting of the indentation of if gives the following:
if cond1 then e1 else
if cond2 then e2 else
if cond3 then e3 else
e4
I would like to realize the same format as Caml programming guidelines:
if cond1 then e1 else
if cond2 then e2 else
if cond3 then e3 else
e4
Could anyone tell me which parameter is related to that? Thank you
Edit1: here is my .emacs
Something seems to be wrong. Are you using the caml-mode from the OCaml distribution ? Because I do and it indents according to the programming guidelines without setting any parameter. That's what I have in my .emacs (the mode is installed in ~/.emacs.d/caml-mode):
;; Caml mode
(setq load-path (cons "~/.emacs.d/caml-mode" load-path))
(setq auto-mode-alist (cons '("\\.ml[iylp]?" . caml-mode) auto-mode-alist))
(autoload 'caml-mode "caml" "Major mode for editing Caml code." t)
(autoload 'run-caml "inf-caml" "Run an inferior Caml process." t)
(autoload 'camldebug "camldebug" "Run the Caml debugger." t)
(if window-system (require 'caml-font))
If you are using tuareg-mode I cannot help you. Note however that, contrary to popular belief, the caml-mode from the distribution is perfectly fine and is still maintained by OCaml's authors.
You can now use ocp-indent which will (almost always) respect the Caml programming guidelines. The only difference is that it will indent the last expression, to avoid confusing scoping errors:
if cond1 then e1 else
if cond2 then e2 else
if cond3 then e3 else
e4;
e5
You can set the variable tuareg-if-then-else-indent to 0 which will then indent your example as
if cond1 then e1 else
if cond2 then e2 else
if cond3 then e3 else
e4
I don't know if that causes other undesirable indentation in case you don't have nested if's though. You can also M-x customize-group RET tuareg RET to see all the indentation (and other) options.
Are you not satisfied with the following?
if c1 then e1
else if c2 then e2
else if c3 then e3
else e4
