[nongnu] elpa/cider 2bc5f1e876 1/3: Allow fallback to xref backends if cider-nrepl is unloaded

[ELPA Syncer]

branch: elpa/cider
commit 2bc5f1e87671929abb26654ff0a5997bc57d82a8
Author: Vedang Manerikar <ved.manerikar@gmail.com>
Commit: Bozhidar Batsov <bozhidar@batsov.dev>

    Allow fallback to xref backends if cider-nrepl is unloaded
    
    This commit addresses the following use-case: Connecting to a running
    REPL which does not have `cider-nrepl` middleware loaded.
    
    This can happen when connecting to remote REPLs, and even
    locally (admittedly minor use-case) if you don't want to turn the
    middleware on.
    
    If `cider--xref-backend` returns nil, `xref` will move on to the next
    backend. This allows using something like `dumb-jump` to move around
    in the code-base, while also getting the benefits of a REPL window.
---
 cider-find.el | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/cider-find.el b/cider-find.el
index ed2b92f34c..ea43dc11dd 100644
--- a/cider-find.el
+++ b/cider-find.el
@@ -232,7 +232,10 @@ thing at point."
 ;; CIDER's xref backend was added in CIDER 1.2.
 (defun cider--xref-backend ()
   "Used for xref integration."
-  'cider)
+  ;; Check if `cider-nrepl` middleware is loaded. Allows fallback to other xref
+  ;; backends, if cider-nrepl is not loaded.
+  (when (cider-nrepl-op-supported-p "ns-path")
+    'cider))
 
 (cl-defmethod xref-backend-identifier-at-point ((_backend (eql cider)))
   "Return the relevant identifier at point."