Note to mods: Please note that this question is NOT AT ALL a question of taste. I am asking for specific information regarding the indenting conventions I have encountered in Spacemacs' default indentation rules for elisp.
Why is this code indented like this by formatters:
(defun lispy--maybe-safe-delete-region (beg end)
"Delete the region from BEG to END.
If `lispy-safe-delete' is non-nil, exclude unmatched delimiters."
(if lispy-safe-delete
(let ((safe-regions (lispy--find-safe-regions beg end)))
(dolist (safe-region safe-regions)
(delete-region (car safe-region) (cdr safe-region)))
(test))
(delete-region beg end)
(test)))
And not like this:
(defun lispy--maybe-safe-delete-region (beg end)
"Delete the region from BEG to END.
If `lispy-safe-delete' is non-nil, exclude unmatched delimiters."
(if lispy-safe-delete
(let ((safe-regions (lispy--find-safe-regions beg end)))
(dolist (safe-region safe-regions)
(delete-region (car safe-region) (cdr safe-region)))
(test))
(delete-region beg end)
(test)))
As you see, the default format has not indented the children of the if sexp at the same level. I don't understand the rules by which it operates, because the children of the let sexp ARE indented at the same level.
Because the IF operator of Emacs Lisp allows one then form and multiple else forms. The else forms are indented differently from the then form for readability.
ELISP> (if (> 10 20)
(print 'foo)
(princ 'bar)
(princ 'baz)
nil)
barbaz
nil