On the 'pristines-on-demand-on-mwf' branch: Tweak a docstring.
No functional change.
* subversion/include/svn_wc.h
(svn_wc_textbase_sync): Document cancel_func and cancel_baton.
@@ -7533,6 +7533,10 @@ typedef svn_error_t *(*svn_wc_textbase_fetch_cb_t)(
* If @a allow_dehydrate is true, remove the on disk text-base contents
* that is not required.
*
+ * If @a cancel_func is non-NULL, invoke it with @a cancel_baton at various
+ * points during the operation. If it returns an error (typically
+ * #SVN_ERR_CANCELLED), return that error immediately.
+ *
* If @a notify_func is non-NULL, invoke it with @a notify_baton to report
* the progress of the operation.
*
