Tilde at the end of expression causes the sky to fall

[ds]

(defun foo~ (x) x)

(foo~

As soon as you type a space after the last "~" above, you get my favourite error message: The sky is falling! Fred NEVER did this!

Dimitri

[jaj]

Easily reproducible. Leave priority major.

[gb]

A very simple way to reproduce this:

? (format t "FOO~ : (X)")
> Error: 
>        Unknown directive
>        "FOO~ : (X)"
>             ^

Moral: code that uses FORMAT as shorthand for WRITE-STRING should be really careful to ensure that that string doesn't contain unescaped tildes; since that's often not possible/practical, code probably shouldn't use FORMAT as shorthand for WRITE-STRING. (Or use HI::MESSAGE that way, either.)

[gb]

This is fixed in the trunk in r11731. The changes are trivial and localized, so it'd be easy to apply them to releases.

[rme]

Ported to 1.3 in r11747.