only evaluate lists with a single character.
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@2214 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
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@@ -3445,7 +3445,8 @@ the call.
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@var{Char} is a lower-case letter.
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@item lower(Upper)
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@var{Char} is a lower-case version of Upper. Only true if @var{Char} is lowercase and Upper uppercase.
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@var{Char} is a lower-case version of @var{Upper}. Only true if
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@var{Char} is lowercase and @var{Upper} uppercase.
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@item to_lower(Upper)
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@var{Char} is a lower-case version of Upper. For non-letters, or letter without case, @var{Char} and Lower are the same. See also upcase_atom/2 and downcase_atom/2.
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