GNU Guile 3.0.1
Copyright (C) 1995-2020 Free Software Foundation, Inc.
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scheme@(guile-user)> (define str2 "hello")
scheme@(guile-user)> (string-set! str2 4 #\a)
ice-9/boot-9.scm:1669:16: In procedure raise-exception:
string is read-only: "hello"
Entering a new prompt. Type `,bt' for a backtrace or `,q' to continue.
scheme@(guile-user) [1]> ,q
scheme@(guile-user)> (string? str2)
#t
is it a bug in Guile ? :-O
i can only find reference to deprecated read-only string in old doc:
Regards,
Damien