fix relative import of modules from current dir

includes a test

compiler/modules/importer.nim

@@ -377,7 +377,29 @@ proc evalImport*(c: PContext, n: PNode): PNode =
   var hasError = false
 
   for it in n.sons:
-    if it.kind == nkInfix and it.len == 3 and it[2].kind == nkBracket:
+    if it.kind == nkPrefix and it.len == 2 and it[1].kind == nkBracket:
+      let
+        sep = it[0]
+        impTmpl =
+          block:
+            let t = newNodeI(nkPrefix, it.info, 2)
+            t[0] = sep
+            t
+          ## `impTmpl` is copied/instanced in a loop below including setting
+          ## the second child
+
+      for x in it[1]:
+        let imp = copyTree(impTmpl)
+
+        # transform `./[a as b] to `./a as b`
+        imp[1] =
+          if x.kind == nkInfix and x[0].ident.s == "as":
+            x[1]
+          else:
+            x
+
+        hasError = impMod(c, imp, x.info, result).kind == nkError or hasError
+    elif it.kind == nkInfix and it.len == 3 and it[2].kind == nkBracket:
       let
         sep = it[0]
         dir = it[1]

tests/lang_stmts/importstmt/timport_relative.nim

@@ -0,0 +1,7 @@
+discard """
+  description: "Regression test for relative imports"
+"""
+
+import ./[mbar]
+import ./[mbaz, mfoo]
+import ./[mqux1 as mqux]