color-for-external-cl-symbols

Arguments: cg-configuration

Returns the color that is used by colorize-source-code for symbols that are external in the common-lisp package, or nil to avoid colorizing these symbols at all. This color may be useful for warning when you are about to inadvertently redefine a standard Common Lisp symbol, or when you have mistyped one.

The colorization is based only on the symbol's package and external status, and will occur even where the symbol is not being used as the function or variable for which it is exported.

The value may be set by calling (setf color-for-external-cl-symbols). The value should be an RGB color, as created with make-rgb, or nil. This option also appears on the Editor Color tab on the Options dialog.

Example

(setf (color-for-external-cl-symbols (configuration *system*))
      (make-rgb :red 0 :green 120 :blue 160))

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Created 2019.8.20.