From 6f3c65422d6a2309d84dfdc0698d7825bc9063f9 Mon Sep 17 00:00:00 2001
From: Fred Drake <fdrake@acm.org>
Date: Tue, 24 Sep 2002 13:57:32 +0000
Subject: [PATCH] Clarify that len() of a Unicode string returns the number of
 storage units, not abstract characters.

---
 Doc/lib/libfuncs.tex | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Doc/lib/libfuncs.tex b/Doc/lib/libfuncs.tex
index fc00dd4197d6..e47e01e8def8 100644
--- a/Doc/lib/libfuncs.tex
+++ b/Doc/lib/libfuncs.tex
@@ -526,6 +526,10 @@ def my_import(name):
 \begin{funcdesc}{len}{s}
   Return the length (the number of items) of an object.  The argument
   may be a sequence (string, tuple or list) or a mapping (dictionary).
+  In the case of Unicode strings, \function{len()} returns the number
+  of storage units, not abstract characters.  In particular, when a
+  surrogate pair is encountered, each component of the pair is counted
+  as a separate character.
 \end{funcdesc}
 
 \begin{funcdesc}{list}{\optional{sequence}}
-- 
2.47.3