Document string methods that are locale-dependent. Fixes #935749.
Will backport to 2.3.
diff --git a/Doc/lib/libstdtypes.tex b/Doc/lib/libstdtypes.tex
index 3526f95..1ffea08 100644
--- a/Doc/lib/libstdtypes.tex
+++ b/Doc/lib/libstdtypes.tex
@@ -546,6 +546,8 @@
\begin{methoddesc}[string]{capitalize}{}
Return a copy of the string with only its first character capitalized.
+
+For 8-bit strings, this method is locale-dependent.
\end{methoddesc}
\begin{methoddesc}[string]{center}{width\optional{, fillchar}}
@@ -608,26 +610,36 @@
\begin{methoddesc}[string]{isalnum}{}
Return true if all characters in the string are alphanumeric and there
is at least one character, false otherwise.
+
+For 8-bit strings, this method is locale-dependent.
\end{methoddesc}
\begin{methoddesc}[string]{isalpha}{}
Return true if all characters in the string are alphabetic and there
is at least one character, false otherwise.
+
+For 8-bit strings, this method is locale-dependent.
\end{methoddesc}
\begin{methoddesc}[string]{isdigit}{}
Return true if all characters in the string are digits and there
is at least one character, false otherwise.
+
+For 8-bit strings, this method is locale-dependent.
\end{methoddesc}
\begin{methoddesc}[string]{islower}{}
Return true if all cased characters in the string are lowercase and
there is at least one cased character, false otherwise.
+
+For 8-bit strings, this method is locale-dependent.
\end{methoddesc}
\begin{methoddesc}[string]{isspace}{}
Return true if there are only whitespace characters in the string and
there is at least one character, false otherwise.
+
+For 8-bit strings, this method is locale-dependent.
\end{methoddesc}
\begin{methoddesc}[string]{istitle}{}
@@ -635,11 +647,15 @@
character, for example uppercase characters may only follow uncased
characters and lowercase characters only cased ones. Return false
otherwise.
+
+For 8-bit strings, this method is locale-dependent.
\end{methoddesc}
\begin{methoddesc}[string]{isupper}{}
Return true if all cased characters in the string are uppercase and
there is at least one cased character, false otherwise.
+
+For 8-bit strings, this method is locale-dependent.
\end{methoddesc}
\begin{methoddesc}[string]{iswide}{}
@@ -664,6 +680,8 @@
\begin{methoddesc}[string]{lower}{}
Return a copy of the string converted to lowercase.
+
+For 8-bit strings, this method is locale-dependent.
\end{methoddesc}
\begin{methoddesc}[string]{lstrip}{\optional{chars}}
@@ -752,11 +770,15 @@
\begin{methoddesc}[string]{swapcase}{}
Return a copy of the string with uppercase characters converted to
lowercase and vice versa.
+
+For 8-bit strings, this method is locale-dependent.
\end{methoddesc}
\begin{methoddesc}[string]{title}{}
Return a titlecased version of the string: words start with uppercase
characters, all remaining cased characters are lowercase.
+
+For 8-bit strings, this method is locale-dependent.
\end{methoddesc}
\begin{methoddesc}[string]{translate}{table\optional{, deletechars}}
@@ -778,6 +800,8 @@
\begin{methoddesc}[string]{upper}{}
Return a copy of the string converted to uppercase.
+
+For 8-bit strings, this method is locale-dependent.
\end{methoddesc}
\begin{methoddesc}[string]{width}{}