Add gradle-kotlin to compilation-error-regexp-alist-alist

* lisp/progmodes/compile.el: Add gradle-kotlin to
compilation-error-regexp-alist-alist.
* etc/compilation.txt: Add samples for it.

etc/compilation.txt

@@ -185,6 +185,14 @@ Warning near line 10 file arrayclash.f: Module contains no executable
 Nonportable usage near line 31 col 9 file assign.f: mixed default and explicit
 
 
+* Gradle with kotlin-gradle-plugin
+
+symbol: gradle-kotlin
+
+e: /src/Test.kt: (34, 15): foo: bar
+w: /src/Test.kt: (34, 15): foo: bar
+
+
 * IAR Systems C Compiler
 
 symbol: iar

lisp/progmodes/compile.el

@@ -236,6 +236,16 @@ of[ \t]+\"?\\([a-zA-Z]?:?[^\":\n]+\\)\"?:" 3 2 nil (1))
      "\\(^Warning .*\\)? line[ \n]\\([0-9]+\\)[ \n]\\(?:col \\([0-9]+\\)[ \n]\\)?file \\([^ :;\n]+\\)"
      4 2 3 (1))
 
+    ;; Gradle with kotlin-gradle-plugin (see
+    ;; GradleStyleMessagerRenderer.kt in kotlin sources, see
+    ;; https://youtrack.jetbrains.com/issue/KT-34683).
+    (gradle-kotlin
+     ,(concat
+       "^\\(?:\\(w\\)\\|.\\): *"            ;type
+       "\\(\\(?:[A-Za-z]:\\)?[^:\n]+\\): *" ;file
+       "(\\([0-9]+\\), *\\([0-9]+\\))")     ;line, column
+     2 3 4 (1))
+
     (iar
      "^\"\\(.*\\)\",\\([0-9]+\\)\\s-+\\(?:Error\\|Warnin\\(g\\)\\)\\[[0-9]+\\]:"
      1 2 nil (3))

test/lisp/progmodes/compile-tests.el

@@ -212,6 +212,13 @@
      1 nil 27041 "{standard input}")
     ("boost/container/detail/flat_tree.hpp:589:25:   [ skipping 5 instantiation contexts, use -ftemplate-backtrace-limit=0 to disable ]"
      1 25 589 "boost/container/detail/flat_tree.hpp" 0)
+    ;; gradle-kotlin
+    ("e: /src/Test.kt: (34, 15): foo: bar" 4 15 34 "/src/Test.kt" 2)
+    ("w: /src/Test.kt: (11, 98): foo: bar" 4 98 11 "/src/Test.kt" 1)
+    ("e: e:/cygwin/src/Test.kt: (34, 15): foo: bar" 4 15 34 "e:/cygwin/src/Test.kt" 2)
+    ("w: e:/cygwin/src/Test.kt: (11, 98): foo: bar" 4 98 11 "e:/cygwin/src/Test.kt" 1)
+    ("e: e:\\src\\Test.kt: (34, 15): foo: bar" 4 15 34 "e:\\src\\Test.kt" 2)
+    ("w: e:\\src\\Test.kt: (11, 98): foo: bar" 4 98 11 "e:\\src\\Test.kt" 1)
     ;; Guile
     ("In foo.scm:\n" 1 nil nil "foo.scm")
     ("  63:4 [call-with-prompt prompt0 ...]" 1 4 63 nil)
@@ -413,8 +420,8 @@ The test data is in `compile-tests--test-regexps-data'."
           (compilation-num-warnings-found 0)
           (compilation-num-infos-found 0))
       (mapc #'compile--test-error-line compile-tests--test-regexps-data)
-      (should (eq compilation-num-errors-found 87))
-      (should (eq compilation-num-warnings-found 32))
+      (should (eq compilation-num-errors-found 90))
+      (should (eq compilation-num-warnings-found 35))
       (should (eq compilation-num-infos-found 26)))))
 
 (ert-deftest compile-test-grep-regexps ()