Variable: lisp-indent-backquote-substitution-mode
lisp-indent-backquote-substitution-mode is a customizable variable
defined in cl-indent.el.gz.
Value
t
Documentation
How to indent substitutions in backquotes.
If t, the default, indent substituted forms normally.
If nil, do not apply special indentation rule to substituted
forms. If corrected, subtract the , or ,@ from the form
column, indenting as if this character sequence were not present.
In any case, do not backtrack beyond a backquote substitution.
Until Emacs 25.1, the nil behavior was hard-wired.
This variable was added, or its default value changed, in Emacs 25.1.
Source Code
;; Defined in /usr/src/emacs/lisp/emacs-lisp/cl-indent.el.gz
(defcustom lisp-indent-backquote-substitution-mode t
"How to indent substitutions in backquotes.
If t, the default, indent substituted forms normally.
If nil, do not apply special indentation rule to substituted
forms. If `corrected', subtract the `,' or `,@' from the form
column, indenting as if this character sequence were not present.
In any case, do not backtrack beyond a backquote substitution.
Until Emacs 25.1, the nil behavior was hard-wired."
:version "25.1"
:type '(choice (const corrected) (const nil) (const t)))