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Function UNEXPORT

Syntax

  • unexport symbols &optional packaget

Arguments and Values

Description

unexport reverts external symbols in package to internal status; it undoes the effect of export.

unexport works only on symbols present in package, switching them back to internal status. If unexport is given a symbol that is already accessible as an internal symbol in package, it does nothing.

Examples

(in-package "COMMON-LISP-USER") → #<PACKAGE "COMMON-LISP-USER"> (export (intern "CONTRABAND" (make-package 'temp)) 'temp) → T (find-symbol "CONTRABAND") → NIL, NIL (use-package 'temp) → T (find-symbol "CONTRABAND") → CONTRABAND, :INHERITED (unexport 'contraband 'temp) → T (find-symbol "CONTRABAND") → NIL, NIL

Side Effects

Package system is modified.

Affected By

Current state of the package system.

Exceptional Situations

If unexport is given a symbol not accessible in package at all, an error of type package-error is signaled.

The consequences are undefined if package is the keyword package or the common-lisp package.

See Also

Notes

None.

\issue{PACKAGE-FUNCTION-CONSISTENCY:MORE-PERMISSIVE}