From c50780930e1f30dec3c0a5356a5b18d0dc67e4b9 Mon Sep 17 00:00:00 2001
From: Anthony Fok <foka@debian.org>
Date: Fri, 30 Jan 2015 16:56:25 -0700
Subject: [PATCH] Print template parsing errors to aid troubleshooting

Added a new Template.PrintErrors() function call,
used in hugolib/site.go#Process() so it does not clutter
up `go test -v ./...` results.

Special thanks to @tatsushid for mapping out the call trace
which makes it a lot easier to find the appropriate places
to place the Template.PrintErrors() call.

Fixes #316
---
 hugolib/site.go | 1 +
 tpl/template.go | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/hugolib/site.go b/hugolib/site.go
index 8c8735692..37deacbc2 100644
--- a/hugolib/site.go
+++ b/hugolib/site.go
@@ -269,6 +269,7 @@ func (s *Site) Process() (err error) {
 		return
 	}
 	s.prepTemplates()
+	s.Tmpl.PrintErrors()
 	s.timerStep("initialize & template prep")
 	if err = s.CreatePages(); err != nil {
 		return
diff --git a/tpl/template.go b/tpl/template.go
index 86e8ea2c1..3377b9a3d 100644
--- a/tpl/template.go
+++ b/tpl/template.go
@@ -50,6 +50,7 @@ type Template interface {
 	AddTemplate(name, tpl string) error
 	AddInternalTemplate(prefix, name, tpl string) error
 	AddInternalShortcode(name, tpl string) error
+	PrintErrors()
 }
 
 type templateErr struct {
@@ -1253,6 +1254,12 @@ func (t *GoHtmlTemplate) LoadTemplates(absPath string) {
 	t.loadTemplates(absPath, "")
 }
 
+func (t *GoHtmlTemplate) PrintErrors() {
+	for _, e := range t.errors {
+		jww.ERROR.Println(e.err)
+	}
+}
+
 func init() {
 	funcMap = template.FuncMap{
 		"urlize":      helpers.Urlize,