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-rw-r--r--Src/compat.c4
-rw-r--r--Src/zsh.h9
2 files changed, 10 insertions, 3 deletions
diff --git a/Src/compat.c b/Src/compat.c
index 6d08dab94..cc4e876da 100644
--- a/Src/compat.c
+++ b/Src/compat.c
@@ -630,7 +630,7 @@ strtoul(nptr, endptr, base)
 #endif /* HAVE_STRTOUL */
 
 /**/
-#if defined(BROKEN_WCWIDTH) && defined(__STDC_ISO_10646__)
+#if defined(BROKEN_WCWIDTH) && (defined(__STDC_ISO_10646__) || defined(__APPLE__))
 
 /*
  * This is an implementation of wcwidth() and wcswidth() (defined in
@@ -949,5 +949,5 @@ int mk_wcswidth_cjk(const wchar_t *pwcs, size_t n)
 #endif /* 0 */
 
 /**/
-#endif /* BROKEN_WCWIDTH && __STDC_ISO_10646__ */
+#endif /* BROKEN_WCWIDTH && (__STDC_ISO_10646__ || __APPLE__) */
 
diff --git a/Src/zsh.h b/Src/zsh.h
index b9f2846f7..e20838249 100644
--- a/Src/zsh.h
+++ b/Src/zsh.h
@@ -2681,7 +2681,14 @@ typedef wint_t convchar_t;
 #define MB_METASTRWIDTH(str)	mb_metastrlen(str, 1)
 #define MB_METASTRLEN2(str, widthp)	mb_metastrlen(str, widthp)
 
-#if defined(BROKEN_WCWIDTH) && defined(__STDC_ISO_10646__)
+/*
+ * We replace broken implementations with one that uses Unicode
+ * characters directly as wide characters.  In principle this is only
+ * likely to work if __STDC_ISO_10646__ is defined, since that's pretty
+ * much what the definition tells us.  However, we happen to know this
+ * works on MacOS which doesn't define that.
+ */
+#if defined(BROKEN_WCWIDTH) && (defined(__STDC_ISO_10646__) || defined(__APPLE__))
 #define WCWIDTH(wc)	mk_wcwidth(wc)
 #else
 #define WCWIDTH(wc)	wcwidth(wc)