Main Index

An italic page number such as 123 indicates a definition. A light page number such as 456 indicates a brief mention. Page numbers followed by the letter t refer to tables. Only variables that must always appear with a leading dollar sign are indexed with a leading dollar sign. Other variables are indexed without a leading dollar sign.

Symbols

– – argument 129, 425, 718

^ in regular expressions 1014

^ quick substitution character 334

, (comma) operator 497

; control operator 145, 290, 499

;; control operator 442, 499

: (null) builtin 473, 485

:– substitutes default values for a variable 473

:? sends to standard error an error message for a variable 474

:= assigns default values for a variable 473

! (NOT) Boolean operator 499, 662

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