Fix ns detection bug

The new regex was missing symbol-end, causing it to match (ns-... functions

Author: yuhan0

clojure-mode.el

@@ -1924,7 +1924,7 @@ content) are considered part of the preceding sexp."
 (make-obsolete-variable 'clojure-namespace-name-regex 'clojure-namespace-regexp "5.12.0")
 
 (defconst clojure-namespace-regexp
-  (rx line-start "(" (? "clojure.core/") (or "in-ns" "ns" "ns+")))
+  (rx line-start "(" (? "clojure.core/") (or "in-ns" "ns" "ns+") symbol-end))
 
 (defcustom clojure-cache-ns nil
   "Whether to cache the results of `clojure-find-ns'.

test/clojure-mode-util-test.el

@@ -109,7 +109,11 @@
 |
 (ns foo4)"
       (re-search-backward "|")
-      (expect (clojure-find-ns) :to-equal "foo3"))))
+      (expect (clojure-find-ns) :to-equal "foo3"))
+    (with-clojure-buffer "(ns foo)
+(ns-unmap *ns* 'map)
+(ns.misleading 1 2 3)"
+      (expect (clojure-find-ns) :to-equal "foo"))))
 
 (describe "clojure-sort-ns"
   (it "should sort requires in a basic ns"