Variable: c-syntactic-indentation-in-macros

c-syntactic-indentation-in-macros is a customizable variable defined in cc-vars.el.gz.

Value

t

Documentation

Enable syntactic analysis inside macros.

If this is nil, all lines inside macro definitions are analyzed as cpp-macro-cont. Otherwise they are analyzed syntactically, just like normal code, and cpp-define-intro is used to create the additional indentation of the bodies of "#define" macros.

Having this enabled simplifies editing of large multiline macros, but it might complicate editing if CC Mode doesn't recognize the context of the macro content. The default context inside the macro is the same as the top level, so if it contains "bare" statements they might be indented wrongly, although there are special cases that handle this in most cases. If this problem occurs, it's usually countered easily by surrounding the statements by a block (or even better with the "do { ... } while (0)" trick).

Probably introduced at or before Emacs version 22.1.

Source Code

;; Defined in /usr/src/emacs/lisp/progmodes/cc-vars.el.gz
(defcustom c-syntactic-indentation-in-macros t
  "Enable syntactic analysis inside macros.
If this is nil, all lines inside macro definitions are analyzed as
`cpp-macro-cont'.  Otherwise they are analyzed syntactically, just
like normal code, and `cpp-define-intro' is used to create the
additional indentation of the bodies of \"#define\" macros.

Having this enabled simplifies editing of large multiline macros, but
it might complicate editing if CC Mode doesn't recognize the context
of the macro content.  The default context inside the macro is the
same as the top level, so if it contains \"bare\" statements they
might be indented wrongly, although there are special cases that
handle this in most cases.  If this problem occurs, it's usually
countered easily by surrounding the statements by a block (or even
better with the \"do { ... } while (0)\" trick)."
  :type 'boolean
  :group 'c)