The word ." prints a string. More precisely it compiles the (.") and the string up to the next " in the currently compiled word.
But how can I print
That's the "question".
with Forth?
In a Forth-2012 System (e.g. Gforth) you can use string literals with escaping via the word s\" as:
: foo ( -- ) s\" That's the \"question\"." type ;
In a Forth-94 system (majority of standard systems) you can use arbitrary parsing and the word sliteral as:
: foo ( -- ) [ char | parse That's the "question".| ] sliteral type ;
A string can be also extracted up to the end of the line (without printable delimiter); a multi-line string can be extracted too.
Specific helpers for particular cases can be easily defined.
For example, see the word s$ for string literals that are delimited by any arbitrary printable character, e.g.:
s$ `"test" 'passed'` type