Hi - I have the following "problem“: (make-string 255) does not make a string with element type character but with type base-char. This is on Lispworks 7 Professional. Can anyone confirm that this is a bug? Thanks! Regards Frank
> On 17 Jan 2016, at 12:42 , Frank Gönninger, Gönninger B&T <frank.goenninger@goenninger.net> wrote: > > Hi - > > I have the following "problem“: (make-string 255) does not make a string with element type character but with type base-char. This is on Lispworks 7 Professional. > > Can anyone confirm that this is a bug? (Probably) not a bug: make-string takes a :key argument element-type that has an implementation-defined default. For Lispworks, this default comes from the variable lw:*default-character-element-type*, which should be set by calling #'lw:set-default-character-element-type. For a fresh Lispworks 7 image, lw:*default-character-element-type* has the value 'base-char, which is exactly what you're seeing. The TL;DR version is something like "if you want make-string to return strings of specific a character type, you need to specify it." _______________________________________________ Lisp Hug - the mailing list for LispWorks users lisp-hug@lispworks.com http://www.lispworks.com/support/lisp-hug.html
Raymond Wiker <rwiker@gmail.com> writes: >> On 17 Jan 2016, at 12:42 , Frank Gönninger, Gönninger B&T <frank.goenninger@goenninger.net> wrote: >> >> Hi - >> >> I have the following "problem“: (make-string 255) does not make a string with element type character but with type base-char. This is on Lispworks 7 Professional. >> >> Can anyone confirm that this is a bug? > > (Probably) not a bug: make-string takes a :key argument element-type > that has an implementation-defined default. In case it's not clear from Frank's reply, make-string's default value for element-type *is* specified to be CHARACTER. It is the INITIAL-ELEMENT that is implementation-dependent. Zach _______________________________________________ Lisp Hug - the mailing list for LispWorks users lisp-hug@lispworks.com http://www.lispworks.com/support/lisp-hug.html