occur: Add bindings for next-error-no-select

Make the navigation in the occur buffer closer
to the navigation in the compilation buffer.

Add bindings to navigate the occur matches (Bug#39121).
Honor `next-error-highlight' and `next-error-highlight-no-select'
when navigating the occurrences.

* lisp/replace.el (occur-highlight-regexp, occur-highlight-overlay):
New variables.
(occur-1): Set `occur-highlight-regexp' to the searched regexp.
(occur-goto-locus-delete-o, occur--highlight-occurrence): New defuns.
(occur-mode-display-occurrence, occur-mode-goto-occurrence):
Use `occur--highlight-occurrence'.
(occur-mode-map): Bind n to `next-error-no-select'
and p to `previous-error-no-select'

* etc/NEWS (Changes in Specialized Modes and Packages in Emacs 28.1):
Announce this change.

* test/lisp/replace-tests.el (replace-tests-with-highlighted-occurrence):
Add helper macro.
(occur-highlight-occurrence): Add test.

1 files changed, 3 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 64cf0abbdb4..3086ffaf91b 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -109,6 +109,9 @@ setting the variable 'auto-save-visited-mode' buffer-locally to nil.
 
 * Changes in Specialized Modes and Packages in Emacs 28.1
 
+** New bindings in occur-mode, 'next-error-no-select' bound to 'n' and
+'previous-error-no-select' bound to 'p'.
+
 ** EIEIO: 'oset' and 'oset-default' are declared obsolete.
 
 ** New minor mode 'cl-font-lock-built-in-mode' for `lisp-mode'.