Docs: LM 5.2.2 Add common error

 - Error message FT_Get_Glyph_Name () error: invalid argument

diff --git a/Documentation/learning/working.itely b/Documentation/learning/working.itely
index a655ed8cf6de324b5de20aa8de8ecf389cc3bed9..04a3711a1b6af7a05c6894972a2d15bb20dda6b7 100644 (file)
--- a/Documentation/learning/working.itely
+++ b/Documentation/learning/working.itely
@@ -259,6 +259,7 @@ are easily handled.
 * An extra staff appears::
 * Apparent error in ../ly/init.ly::
 * Error message Unbound variable %::
+* Error message FT_Get_Glyph_Name::
 @end menu
 
 @node Music runs off the page
@@ -372,6 +373,13 @@ LilyPond comments begin with a percent sign, (@code{%}), and must
 not be used within Scheme routines.  Scheme comments begin with a
 semi-colon, (@code{;}).
 
+@node Error message FT_Get_Glyph_Name
+@unnumberedsubsubsec Error message FT_Get_Glyph_Name
+
+This error messages appears in the console output or log file if
+an input file contains a non-ASCII character and was not saved in
+UTF-8 encoding.  For details, see @ruser{Text encoding}.
+
 @node Troubleshooting (taking it all apart)
 @subsection Troubleshooting (taking it all apart)