Eglot: fix relative position of coinciding inlay hint overlays (bug#64101)

Only seems to happen on certain platforms, like Mac OS.  Reason
unknown reason so far, but this defensive fix seems safe.

* lisp/progmodes/eglot.el (eglot--update-hints-1): Explicitly put
priority in inlay hint overalys.

diff --git a/lisp/progmodes/eglot.el b/lisp/progmodes/eglot.el
index df8f5f64829fedc3e5a9aad87bf142a9bb43c4e7..352a6ffd6b02c47ba2cb716929701778a946a828 100644 (file)
--- a/lisp/progmodes/eglot.el
+++ b/lisp/progmodes/eglot.el
@@ -3644,8 +3644,9 @@ If NOERROR, return predicate, else erroring function."
                      (if peg-after-p
                          (make-overlay (point) (1+ (point)) nil t)
                        (make-overlay (1- (point)) (point) nil nil nil)))
-                   (do-it (label lpad rpad firstp)
-                     (let* ((tweak-cursor-p (and firstp peg-after-p))
+                   (do-it (label lpad rpad i)
+                     (let* ((firstp (zerop i))
+                            (tweak-cursor-p (and firstp peg-after-p))
                             (ov (make-ov))
                             (text (concat lpad label rpad)))
                        (when tweak-cursor-p (put-text-property 0 1 'cursor 1 text))
@@ -3656,17 +3657,18 @@ If NOERROR, return predicate, else erroring function."
                                              (1 'eglot-type-hint-face)
                                              (2 'eglot-parameter-hint-face)
                                              (_ 'eglot-inlay-hint-face))))
+                       (overlay-put ov 'priority i)
                        (overlay-put ov 'eglot--inlay-hint t)
                        (overlay-put ov 'evaporate t)
                        (overlay-put ov 'eglot--overlay t))))
-                (if (stringp label) (do-it label left-pad right-pad t)
+                (if (stringp label) (do-it label left-pad right-pad 0)
                   (cl-loop
                    for i from 0 for ldetail across label
                    do (eglot--dbind ((InlayHintLabelPart) value) ldetail
                         (do-it value
                                (and (zerop i) left-pad)
                                (and (= i (1- (length label))) right-pad)
-                               (zerop i))))))))))
+                               i)))))))))
     (jsonrpc-async-request
      (eglot--current-server-or-lose)
      :textDocument/inlayHint