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fix: disable *pretty-print* for header formatting #49

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Merged
merged 1 commit into from
Jul 13, 2025
Merged

fix: disable *pretty-print* for header formatting #49

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10 changes: 7 additions & 3 deletions src/truth-table.lisp
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Original file line number Diff line number Diff line change
Expand Up @@ -179,6 +179,12 @@ a tautology."
(equal (eval-expression exp1)
(eval-expression exp2)))

(defun generate-printable-header (header)
(let ((*print-pretty* nil))
(loop for x in header
for p = (princ-to-string x)
collect (concatenate 'string " " p " |"))))

(defun print-truth-table (exp)
"Given a EXP with prefixed notation generate
a pretty truth-table for each grouped case."
Expand All @@ -187,9 +193,7 @@ a tautology."
(truth-table (prepare-table evaluated-cases))
(header (loop for column in truth-table collect (car column)))
(n-values (length (cadr truth-table)))
(printable-header (loop for x in header
for p = (princ-to-string x)
collect (concatenate 'string " " p " |")))
(printable-header (generate-printable-header header))
(spaces (mapcar #'length printable-header)))
(print-bar spaces)
(princ-n "|")
Expand Down