correct description of list.insert()

diff --git a/Doc/lib/libtypes.tex b/Doc/lib/libtypes.tex
index 248ad6e4a1392aad2b33c10a8177cca93eb73898..a3bc0b22ac82c42aff1e198f77117fd0acaf8830 100644 (file)
--- a/Doc/lib/libtypes.tex
+++ b/Doc/lib/libtypes.tex
@@ -434,7 +434,8 @@ The following operations are defined on mutable sequence types (where
   \lineiii{\var{s}.index(\var{x})}
        {return smallest \var{i} such that \code{\var{s}[\var{i}] == \var{x}}}{(1)}
   \lineiii{\var{s}.insert(\var{i}, \var{x})}
-       {same as \code{\var{s}[\var{i}:\var{i}] = [\var{x}]}}{}
+       {same as \code{\var{s}[\var{i}:\var{i}] = [\var{x}]}
+         if \code{\var{i} >= 0}}{}
   \lineiii{\var{s}.remove(\var{x})}
        {same as \code{del \var{s}[\var{s}.index(\var{x})]}}{(1)}
   \lineiii{\var{s}.reverse()}

diff --git a/Doc/libtypes.tex b/Doc/libtypes.tex
index 248ad6e4a1392aad2b33c10a8177cca93eb73898..a3bc0b22ac82c42aff1e198f77117fd0acaf8830 100644 (file)
--- a/Doc/libtypes.tex
+++ b/Doc/libtypes.tex
@@ -434,7 +434,8 @@ The following operations are defined on mutable sequence types (where
   \lineiii{\var{s}.index(\var{x})}
        {return smallest \var{i} such that \code{\var{s}[\var{i}] == \var{x}}}{(1)}
   \lineiii{\var{s}.insert(\var{i}, \var{x})}
-       {same as \code{\var{s}[\var{i}:\var{i}] = [\var{x}]}}{}
+       {same as \code{\var{s}[\var{i}:\var{i}] = [\var{x}]}
+         if \code{\var{i} >= 0}}{}
   \lineiii{\var{s}.remove(\var{x})}
        {same as \code{del \var{s}[\var{s}.index(\var{x})]}}{(1)}
   \lineiii{\var{s}.reverse()}