Local Macro pprint-exit-if-list-exhausted

Syntax:

Arguments and Values:

None.

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.

Examples:

None.

Side Effects:

None.

Affected By:

None.

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 syntactically nestedlexically within a call on pprint-logical-block. It is undefined what happens if \funref{pprint-if-list-exhausted} is executed outside of the dynamic extent of this \funref{pprint-logical-block}.Also, the consequences of executing pprint-exit-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.

Notes:

None.