Add index entry for "ignore case"

* doc/emacs/glossary.texi (Glossary): Add index entry for "ignore
case" pointing to "Case Folding".

diff --git a/doc/emacs/glossary.texi b/doc/emacs/glossary.texi
index a78a2c9e2d766dfe0753f630e4c8913e6b4996ef..5224e313407d5c3a4e08be605c7d49c1bbee5740 100644 (file)
--- a/doc/emacs/glossary.texi
+++ b/doc/emacs/glossary.texi
@@ -182,6 +182,7 @@ corresponding Control character.  @xref{User Input,C-M-}.
 Case conversion means changing text from upper case to lower case or
 vice versa.  @xref{Case}.
 
+@cindex ignore case
 @item Case Folding
 Case folding means ignoring the differences between case variants of
 the same letter: upper-case, lower-case, and title-case.  Emacs