bug#43489: [PATCH] Don't signal scan-error when moving by sexp interactively

[Mattias Engdegård]

When moving by sexp (C-M-f, C-M-u and so on) and point is already at a boundary 
preventing further movement, Emacs currently signals an internal error such as

 Scan error: "Containing expression ends prematurely", 5010, 5010

or

 Scan error: "Unbalanced parentheses", 5010, 1

which is unhelpful and rather looks as if something went wrong in the internal 
machinery.

The attached patch does away with this error when the commands are invoked 
interactively; programmatic use of the functions will get the scan-error just 
like before. There didn't seem to be much point in replacing the errors with 
new messages so the current version of the patch doesn't.

0001-Don-t-signal-scan-error-when-moving-by-sexp-interact.patch
Description: Binary data