small style fixes related to templates

pkg/mark/includes/templates.go

@@ -20,9 +20,9 @@ import (
 //      <optional yaml data> -->
 var reIncludeDirective = regexp.MustCompile(
 	`(?s)` +
-	`<!--\s*Include:\s*(?P<template>.+?)\s*` +
-	`(?:\n\s*Delims:\s*(?:(none|"(?P<left>.*?)"\s*,\s*"(?P<right>.*?)")))?\s*` +
-	`(?:\n(?P<config>.*?))?-->`,
+		`<!--\s*Include:\s*(?P<template>.+?)\s*` +
+		`(?:\n\s*Delims:\s*(?:(none|"(?P<left>.*?)"\s*,\s*"(?P<right>.*?)")))?\s*` +
+		`(?:\n(?P<config>.*?))?-->`,
 )
 
 func LoadTemplate(
@@ -111,15 +111,21 @@ func ProcessIncludes(
 			groups := reIncludeDirective.FindSubmatch(spec)
 
 			var (
-				path, none, left, right, config = string(groups[1]), string(groups[2]), string(groups[3]), string(groups[4]), groups[5]
-				data = map[string]interface{}{}
+				path       = string(groups[1])
+				delimsNone = string(groups[2])
+				left       = string(groups[3])
+				right      = string(groups[4])
+				config     = groups[5]
+				data       = map[string]interface{}{}
 
 				facts = karma.Describe("path", path)
 			)
-			if none == "none" {
+
+			if delimsNone == "none" {
 				left = "\x00"
 				right = "\x01"
 			}
+
 			err = yaml.Unmarshal(config, &data)
 			if err != nil {
 				err = facts.

pkg/mark/macro/macro.go

@@ -130,10 +130,10 @@ func ExtractMacros(
 					"template",
 				)
 				config = regexputil.Subexp(reMacroDirective, groups, "config")
-
-				macro Macro
 			)
 
+			var macro Macro
+
 			if strings.HasPrefix(template, "#") {
 				cfg := map[string]interface{}{}
 
@@ -143,27 +143,38 @@ func ExtractMacros(
 						err,
 						"unable to unmarshal macros config template",
 					)
+
 					return nil
 				}
-				body, _ := cfg[template[1:]].(string)
+
+				body, ok := cfg[template[1:]].(string)
+				if !ok {
+					err = fmt.Errorf(
+						"the template config doesn't have '%s' field",
+						template[1:],
+					)
+
+					return nil
+				}
+
 				macro.Template, err = templates.New(template).Parse(body)
 				if err != nil {
 					err = karma.Format(
 						err,
 						"unable to parse template",
 					)
+
 					return nil
 				}
 			} else {
 				macro.Template, err = includes.LoadTemplate(base, template, "{{", "}}", templates)
 				if err != nil {
 					err = karma.Format(err, "unable to load template")
-	
+
 					return nil
 				}
 			}
 
-
 			facts := karma.
 				Describe("template", template).
 				Describe("expr", expr)