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| ANSI Common Lisp 22 Printer 22.4 Dictionary of Printer
22.4.4 pprint-exit-if-list-exhausted | Local Macro
Syntax: pprint-exit-if-list-exhausted < no arguments > nil Description: Tests whether or not the list passed to the lexically current logical block has been exhausted; see Section 22.2.1.1 Dynamic Control of the Arrangement of Output. If this list has been reduced to nil, pprint-exit-if-list-exhausted terminates the execution of the lexically current logical block except for the printing of the suffix. Otherwise pprint-exit-if-list-exhausted returns nil. Whether or not pprint-exit-if-list-exhausted is fbound in the global environment is implementation-dependent; however, the restrictions on redefinition and shadowing of pprint-exit-if-list-exhausted are the same as for symbols in the `common-lisp` package which are fbound in the global environment. The consequences of attempting to use pprint-exit-if-list-exhausted outside of pprint-logical-block are undefined. Exceptional Situations: An error is signaled (at macro expansion time or at run time) if pprint-exit-if-list-exhausted is used anywhere other than lexically within a call on pprint-logical-block. Also, the consequences of executing pprint-if-list-exhausted outside of the dynamic extent of the pprint-logical-block which lexically contains it are undefined. See Also: pprint-logical-block, pprint-pop. Allegro CL Implementation Details: None.

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