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-rw-r--r--Doc/Zsh/params.yo4
1 files changed, 4 insertions, 0 deletions
diff --git a/Doc/Zsh/params.yo b/Doc/Zsh/params.yo
index a0e520274..30bf1174c 100644
--- a/Doc/Zsh/params.yo
+++ b/Doc/Zsh/params.yo
@@ -803,6 +803,10 @@ mechanism.  The first character signals the start of a history
 expansion (default `tt(!)').  The second character signals the
 start of a quick history substitution (default `tt(^)').  The third
 character is the comment character (default `tt(#)').
+
+The characters must be in the ASCII character set; any attempt to set
+tt(histchars) to characters with a locale-dependent meaning will be
+rejected with an error message.
 )
 vindex(HISTCHARS)
 item(tt(HISTCHARS) <S> <Z>)(