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| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version

## *template-chars*

The value of this variable is an association list describing how various characters in a template-string are to be interpreted. Each entry in the list consists of:

1. a template-character,
2. a predicate function that determines which characters may be typed by the user at positions where that template character is specified (this predicate should take one argument, which should be a character, and return non-`nil` if the character passed to it is allowed), and
3. a character to initially display in the component at the positions of that template character (these are all #\space by default).

The initial value of this list is:

    (

     ;; A space character allows the user to type any graphical
     ;; character, and initially prints a space.
     (#\space graphic-char-p #\space)

     ;; A "c" allows any letter or numeral to be typed, while
     ;; an "a" allows only letters.
     (#\c alphanumericp #\space)
     (#\a alpha-char-p #\space)

     ;; A zero requires a numeral to be typed and also displays
     ;; a zero initially.
     (#\0 digit-char-p #\0)

     ;; A 9 allows only a numeral, even though it initially
     ;; displays a space (which makes it clear that nothing
     ;; has been entered there yet).
     (#\9 digit-char-p #\space)

     ;; These two both allow either a numeral or a space,
     ;; but differ in the initially-printed character.
     (#\8 digit-char-or-space-p #\0)
     (#\7 digit-char-or-space-p #\space)

     )

Copyright (c) 1998-2022, Franz Inc. Lafayette, CA., USA. All rights reserved.
This page was not revised from the 10.0 page.
Created 2019.8.20.

|  | ToC | DocOverview | CGDoc | RelNotes | FAQ | Index | PermutedIndex
| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version