4 files changed, 33 insertions, 1 deletions
diff --git a/src/nvim/eval.c b/src/nvim/eval.c
index 3b8b38588b..6dc7e5606e 100644
--- a/src/nvim/eval.c
+++ b/src/nvim/eval.c
@@ -8111,6 +8111,30 @@ static void f_assert_fails(typval_T *argvars, typval_T *rettv, FunPtr fptr)
   set_vim_var_string(VV_ERRMSG, NULL, 0);
 }
 
+void assert_inrange(typval_T *argvars)
+{
+  int error = (int)false;
+  varnumber_T lower = get_tv_number_chk(&argvars[0], &error);
+  varnumber_T upper = get_tv_number_chk(&argvars[1], &error);
+  varnumber_T actual = get_tv_number_chk(&argvars[2], &error);
+
+  if (error) {
+    return;
+  }
+  if (actual < lower || actual > upper) {
+    garray_T ga;
+    prepare_assert_error(&ga);
+
+    char msg[55];
+    vim_snprintf(msg, sizeof(msg), "range %" PRId64 " - %" PRId64 ",",
+                 (int64_t)lower, (int64_t)upper);
+    fill_assert_error(&ga, &argvars[3], (char_u *)msg, NULL, &argvars[2],
+                      ASSERT_INRANGE);
+    assert_error(&ga);
+    ga_clear(&ga);
+  }
+}
+
 // Common for assert_true() and assert_false().
 static void assert_bool(typval_T *argvars, bool is_true)
 {
@@ -8158,6 +8182,12 @@ static void assert_match_common(typval_T *argvars, assert_type_T atype)
   }
 }
 
+/// "assert_inrange(lower, upper[, msg])" function
+static void f_assert_inrange(typval_T *argvars, typval_T *rettv, FunPtr fptr)
+{
+    assert_inrange(argvars);
+}
+
 /// "assert_match(pattern, actual[, msg])" function
 static void f_assert_match(typval_T *argvars, typval_T *rettv, FunPtr fptr)
 {
diff --git a/src/nvim/eval.lua b/src/nvim/eval.lua
index fa19ff209e..e3c5981b32 100644
--- a/src/nvim/eval.lua
+++ b/src/nvim/eval.lua
@@ -29,6 +29,7 @@ return {
     assert_exception={args={1, 2}},
     assert_fails={args={1, 2}},
     assert_false={args={1, 2}},
+    assert_inrange={args={2, 3}},
     assert_match={args={2, 3}},
     assert_notequal={args={2, 3}},
     assert_notmatch={args={2, 3}},
diff --git a/src/nvim/eval_defs.h b/src/nvim/eval_defs.h
index fb2822b851..39028fdb11 100644
--- a/src/nvim/eval_defs.h
+++ b/src/nvim/eval_defs.h
@@ -278,6 +278,7 @@ typedef enum
   ASSERT_NOTEQUAL,
   ASSERT_MATCH,
   ASSERT_NOTMATCH,
+  ASSERT_INRANGE,
   ASSERT_OTHER,
 } assert_type_T;
 
diff --git a/src/nvim/version.c b/src/nvim/version.c
index 87acb3f361..46009de4ea 100644
--- a/src/nvim/version.c
+++ b/src/nvim/version.c
@@ -345,7 +345,7 @@ static int included_patches[] = {
   2098,
   // 2097,
   2096,
-  // 2095,
+  2095,
   // 2094 NA
   // 2093 NA
   // 2092 NA