ccmode: Other Indentation
11.5 Other Special Indentations
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To configure macros which you invoke without a terminating ‘;’, see
Macros with ;.
Here are the remaining odds and ends regarding indentation:
-- User Option: c-label-minimum-indentation
In ‘gnu’ style (Built-in Styles), a minimum indentation is
imposed on lines inside code blocks. This minimum indentation is
controlled by this style variable. The default value is 1.
It’s the function ‘c-gnu-impose-minimum’ that enforces this minimum
indentation. It must be present on ‘c-special-indent-hook’ to
work.
-- User Option: c-special-indent-hook
This style variable is a standard hook variable that is called
after every line is indented by CC Mode. It is called only if
‘c-syntactic-indentation’ is non-‘nil’ (which it is by default
(Indentation Engine Basics)). You can put a function on
this hook to do any special indentation or ad hoc line adjustments
your style dictates, such as adding extra indentation to
constructors or destructor declarations in a class definition, etc.
Sometimes it is better to write a custom Line-up Function instead
(Custom Line-Up).
When the indentation engine calls this hook, the variable
‘c-syntactic-context’ is bound to the current syntactic context
(i.e., what you would get by typing ‘C-c C-s’ on the source line.
Custom Braces.). Note that you should not change point or
mark inside a ‘c-special-indent-hook’ function, i.e., you’ll
probably want to wrap your function in a ‘save-excursion’(1).
Setting ‘c-special-indent-hook’ in style definitions is handled
slightly differently from other variables—A style can only add
functions to this hook, not remove them. Style Variables.
---------- Footnotes ----------
(1) The numerical value returned by ‘point’ will change if you change
the indentation of the line within a ‘save-excursion’ form, but point
itself will still be over the same piece of text.
Info Catalog
ccmode: Custom Line-Up
ccmode: Customizing Indentation