compile range() with one argument

Author: itchyny

go/_test/special.go

@@ -3,7 +3,8 @@ self.hoge = 1
 self.ea.range_ = 1
 xxx.x = 1
 var z = self.ea.range_
-var xs = viml_range(10)
+var xs = viml_range(0, 10 - 1)
+xs = viml_range(0, 10)
 Node()
 var type_ = 1
 var t = type_

go/_test/special.vim

@@ -78,6 +78,7 @@ let self.ea.range = 1
 let xxx.x = 1
 let z = self.ea.range
 let xs = range(10)
+let xs = range(0, 10)
 
 function! s:Node()
   " skip Node definition

go/gocompiler.vim

@@ -882,6 +882,9 @@ function s:GoCompiler.compile_call(node)
     endif
   endif
   if left == 'range_'
+    if len(rlist) == 1
+      let rlist = ['0', rlist[0] . ' - 1']
+    endif
     let left = 'viml_range'
   endif
   return printf('%s(%s)', left, join(rlist, ', '))