* lisp/osc.el (osc-control-seq-regexp): Regexp matching OSC control sequence.
(osc-filter-region): Filter out OSC control sequences from region.
(osc-for-compilation-buffer): Determines what to do with OSC escape
sequences in compilation output.
(osc-compilation-filter): Implement OSC escape sequence handling for
compilation output (bug#57821).
* lisp/osc.el (osc-handlers): Bind osc-window-title-handler to OSC
command 2.
(osc-window-title): Local variable storing string extracted from OSC
command 2.
(osc-window-title-handler): Copy text from OSC command 2 to
osc-window-title (bug#57821).
* lisp/comint.el (osc): Now requires osc.el.
(comint-osc-directory-tracker): Alias to osc-directory-tracker.
(comint-osc-hyperlink-handler): Alias to osc-hyperlink-handler.
(comint-osc-hyperlink-map): Alias to osc-hyperlink-map.
(comint-osc-handlers): Alias to osc-handlers.
(comint-osc-hyperlink): Alias to osc-hyperlink.
(comint-osc-process-output): Rewritten to call osc-apply-on-region.
* lisp/osc.el (osc-handlers): Clone comint-osc-handlers.
(osc--marker): Clone comint-osc--marker.
(osc-apply-on-region): Implementation taken from comint-osc-process-output.
(osc-directory-tracker): Clone from comint-osc-directory-tracker.
(osc-hyperlink-map): Clone from comint-osc-hyperlink-map.
(osc-hyperlink): Clone from comint-osc-hyperlink.
(osc-hyperlink--state): Clone from comint-osc-hyperlink--state.
(osc-hyperlink-handler): Clone from comint-osc-hyperlink-handler.
* test/lisp/osc-tests.el (osc): Test osc-apply-region (bug#57821).
