Improve word motion docs (Bug#30815)

* doc/lispref/positions.texi (Word Motion): Fix reference to
`char-script-table'.
* lisp/simple.el (backward-word):
* src/syntax.c (forward-word): Mention `char-script-table' and add
link to the 'Word Motion' manual section.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/syntax.c b/src/syntax.c
index 378064611cc..e54325589f3 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -1552,10 +1552,11 @@ left there and the function returns nil.  Field boundaries are not
 noticed if `inhibit-field-text-motion' is non-nil.
 
 The word boundaries are normally determined by the buffer's syntax
-table, but `find-word-boundary-function-table', such as set up
-by `subword-mode', can change that.  If a Lisp program needs to
-move by words determined strictly by the syntax table, it should
-use `forward-word-strictly' instead.  */)
+table and character script (according to `char-script-table'), but
+`find-word-boundary-function-table', such as set up by `subword-mode',
+can change that.  If a Lisp program needs to move by words determined
+strictly by the syntax table, it should use `forward-word-strictly'
+instead.  See Info node `(elisp) Word Motion' for details.  */)
   (Lisp_Object arg)
 {
   Lisp_Object tmp;