Mention new usage of `invalid-read-syntax' in the manual

* doc/lispref/errors.texi (Standard Errors): Document "trailing
garbage" use of `invalid-read-syntax' (bug#24649).

diff --git a/doc/lispref/errors.texi b/doc/lispref/errors.texi
index aa99b2b1a989807e9e63663b420d6608374ac667..b25fb993990b825ea36e36d18b3e7e355a71b5a2 100644 (file)
--- a/doc/lispref/errors.texi
+++ b/doc/lispref/errors.texi
@@ -140,8 +140,10 @@ emacs, The GNU Emacs Manual}.
 The message is @samp{Invalid function}.  @xref{Function Indirection}.
 
 @item invalid-read-syntax
-The message is @samp{Invalid read syntax}.  @xref{Printed
-Representation}.
+The message is usually @samp{Invalid read syntax}.  @xref{Printed
+Representation}.  This error can also be raised by commands like
+@code{eval-expression} when there's text following an expression.  In
+that case, the message is @samp{Trailing garbage following expression}.
 
 @item invalid-regexp
 The message is @samp{Invalid regexp}.  @xref{Regular Expressions}.