emacs-29 f063f79a493: Convert NUL-containing NSString objects to Lisp strings correctly

[Mattias Engdegård]

branch: emacs-29
commit f063f79a4933f21dc72c6a24b60f98197543d3de
Author: Mattias Engdegård <mattiase@acm.org>
Commit: Mattias Engdegård <mattiase@acm.org>

    Convert NUL-containing NSString objects to Lisp strings correctly
    
    This cures the inability to paste text containing NUL from other
    applications on macOS, introduced by mistake in 7e3c2b553f
    (bug#64697).
    
    * src/nsfns.m ([NSString lispString]): Use make_string instead of
    build_string which relies on NUL-termination.
---
 src/nsfns.m | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/nsfns.m b/src/nsfns.m
index 8804a7df7cf..5ae2cc77bb2 100644
--- a/src/nsfns.m
+++ b/src/nsfns.m
@@ -3829,7 +3829,9 @@ all_nonzero_ascii (unsigned char *str, ptrdiff_t n)
 /* Make a Lisp string from an NSString.  */
 - (Lisp_Object)lispString
 {
-  return build_string ([self UTF8String]);
+  // make_string behaves predictably and correctly with UTF-8 input.
+  return make_string ([self UTF8String],
+                      [self lengthOfBytesUsingEncoding: NSUTF8StringEncoding]);
 }
 @end