*zoom-print-level*

During the printing of stack frames (e.g. because of a call to :zoom), *print-circle*, *print-level* and *print-length* are bound to the values of *zoom-print-circle*, this variable, and *zoom-print-length*.

:zoom takes a level keyword argument. If that argument is specified, *print-level* is bound to the specified value during the call to :zoom and the value of this argument is ignored.

The value of this variable may be, in addition to the values usually allowed for a print control variable, the symbol :follow. That value means use the current value of cl:*print-level*. See Allegro CL print variables can follow the CL print variable value in implementation.htm.

This variable is not available in Lisp images built with a minimal top level, that is built with the include-tpl argument to build-lisp-image specified nil. See Minimal top levels in building-images.htm for information on minimal top levels.

See debugging.htm for more information on the debugger.

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This page was not revised from the 10.0 page.
Created 2019.8.20.