commands, hugolib: Get file context in "config parse failed" errors

Fixes #5325

5 files changed, 33 insertions, 16 deletions

diff --git a/hugolib/config.go b/hugolib/config.go
index b21981304..32fa2dfca 100644
--- a/hugolib/config.go
+++ b/hugolib/config.go
@@ -16,10 +16,11 @@ package hugolib
 import (
 	"errors"
 	"fmt"
-
 	"io"
 	"strings"
 
+	"github.com/gohugoio/hugo/common/herrors"
+
 	"github.com/gohugoio/hugo/hugolib/paths"
 	_errors "github.com/pkg/errors"
 
@@ -106,12 +107,23 @@ func LoadConfig(d ConfigSourceDescriptor, doWithConfig ...func(cfg config.Provid
 	v.SetConfigFile(configFilenames[0])
 	v.AddConfigPath(d.Path)
 
+	applyFileContext := func(filename string, err error) error {
+		err, _ = herrors.WithFileContextForFile(
+			err,
+			filename,
+			filename,
+			fs,
+			herrors.SimpleLineMatcher)
+
+		return err
+	}
+
 	var configFileErr error
 
 	err := v.ReadInConfig()
 	if err != nil {
 		if _, ok := err.(viper.ConfigParseError); ok {
-			return nil, configFiles, err
+			return nil, configFiles, applyFileContext(v.ConfigFileUsed(), err)
 		}
 		configFileErr = ErrNoConfigFile
 	}
@@ -129,7 +141,7 @@ func LoadConfig(d ConfigSourceDescriptor, doWithConfig ...func(cfg config.Provid
 				return nil, configFiles, fmt.Errorf("Unable to open Config file.\n (%s)\n", err)
 			}
 			if err = v.MergeConfig(r); err != nil {
-				return nil, configFiles, fmt.Errorf("Unable to parse/merge Config file (%s).\n (%s)\n", configFile, err)
+				return nil, configFiles, applyFileContext(configFile, err)
 			}
 			configFiles = append(configFiles, configFile)
 		}
diff --git a/hugolib/hugo_sites_build_errors_test.go b/hugolib/hugo_sites_build_errors_test.go
index 2e8eb99ea..f290022e0 100644
--- a/hugolib/hugo_sites_build_errors_test.go
+++ b/hugolib/hugo_sites_build_errors_test.go
@@ -30,7 +30,7 @@ func (t testSiteBuildErrorAsserter) assertLineNumber(lineNumber int, err error)
 func (t testSiteBuildErrorAsserter) assertErrorMessage(e1, e2 string) {
 	// The error message will contain filenames with OS slashes. Normalize before compare.
 	e1, e2 = filepath.ToSlash(e1), filepath.ToSlash(e2)
-	t.assert.Equal(e1, e2, trace())
+	t.assert.Contains(e2, e1, trace())
 
 }
 
@@ -102,8 +102,8 @@ func TestSiteBuildErrors(t *testing.T) {
 				fe := a.getFileError(err)
 				assert.Equal(5, fe.LineNumber)
 				assert.Equal(14, fe.ColumnNumber)
-				assert.Equal("md", fe.ChromaLexer)
-				a.assertErrorMessage("asdfadf", fe.Error())
+				assert.Equal("go-html-template", fe.ChromaLexer)
+				a.assertErrorMessage("\"layouts/_default/single.html:5:14\": execute of template failed", fe.Error())
 
 			},
 		},
@@ -124,7 +124,12 @@ func TestSiteBuildErrors(t *testing.T) {
 				return strings.Replace(content, ".Title", ".Titles", 1)
 			},
 			assertBuildError: func(a testSiteBuildErrorAsserter, err error) {
-				a.assertLineNumber(4, err)
+				fe := a.getFileError(err)
+				assert.Equal(7, fe.LineNumber)
+				assert.Equal("md", fe.ChromaLexer)
+				// Make sure that it contains both the content file and template
+				a.assertErrorMessage(`content/myyaml.md:7:10": failed to render shortcode "sc"`, fe.Error())
+				a.assertErrorMessage(`shortcodes/sc.html:4:22: executing "shortcodes/sc.html" at <.Page.Titles>: can't evaluate`, fe.Error())
 			},
 		},
 		{
@@ -173,7 +178,7 @@ func TestSiteBuildErrors(t *testing.T) {
 			},
 			assertBuildError: func(a testSiteBuildErrorAsserter, err error) {
 				assert.Error(err)
-				assert.Contains(err.Error(), "single.html")
+				assert.Contains(err.Error(), `"content/mytoml.md": render of "page" failed: execute of template failed: panic in Execute`)
 			},
 		},
 	}
diff --git a/hugolib/page_bundler_test.go b/hugolib/page_bundler_test.go
index 39de49663..1eb5aacdd 100644
--- a/hugolib/page_bundler_test.go
+++ b/hugolib/page_bundler_test.go
@@ -132,7 +132,7 @@ func TestPageBundlerSiteRegular(t *testing.T) {
 				assert.Len(pageResources, 2)
 				firstPage := pageResources[0].(*Page)
 				secondPage := pageResources[1].(*Page)
-				assert.Equal(filepath.FromSlash("base/b/my-bundle/1.md"), firstPage.pathOrTitle(), secondPage.pathOrTitle())
+				assert.Equal(filepath.FromSlash("/work/base/b/my-bundle/1.md"), firstPage.pathOrTitle(), secondPage.pathOrTitle())
 				assert.Contains(firstPage.content(), "TheContent")
 				assert.Equal(6, len(leafBundle1.Resources))
 
diff --git a/hugolib/page_test.go b/hugolib/page_test.go
index 7359140fc..ced7e78d8 100644
--- a/hugolib/page_test.go
+++ b/hugolib/page_test.go
@@ -1145,7 +1145,7 @@ func TestDegenerateInvalidFrontMatterShortDelim(t *testing.T) {
 		r   string
 		err string
 	}{
-		{invalidFrontmatterShortDelimEnding, ":2: EOF looking for end YAML front matter delimiter"},
+		{invalidFrontmatterShortDelimEnding, "EOF looking for end YAML front matter delimiter"},
 	}
 	for _, test := range tests {
 		s := newTestSite(t)
diff --git a/hugolib/shortcode_test.go b/hugolib/shortcode_test.go
index 6e250ed21..0d397f9ee 100644
--- a/hugolib/shortcode_test.go
+++ b/hugolib/shortcode_test.go
@@ -368,11 +368,11 @@ func TestExtractShortcodes(t *testing.T) {
 		expectErrorMsg   string
 	}{
 		{"text", "Some text.", "map[]", "Some text.", ""},
-		{"invalid right delim", "{{< tag }}", "", false, ":5:.*unrecognized character.*}"},
-		{"invalid close", "\n{{< /tag >}}", "", false, ":6:.*got closing shortcode, but none is open"},
-		{"invalid close2", "\n\n{{< tag >}}{{< /anotherTag >}}", "", false, ":7: closing tag for shortcode 'anotherTag' does not match start tag"},
-		{"unterminated quote 1", `{{< figure src="im caption="S" >}}`, "", false, ":5:.got pos.*"},
-		{"unterminated quote 1", `{{< figure src="im" caption="S >}}`, "", false, ":5:.*unterm.*}"},
+		{"invalid right delim", "{{< tag }}", "", false, "unrecognized character"},
+		{"invalid close", "\n{{< /tag >}}", "", false, "got closing shortcode, but none is open"},
+		{"invalid close2", "\n\n{{< tag >}}{{< /anotherTag >}}", "", false, "closing tag for shortcode 'anotherTag' does not match start tag"},
+		{"unterminated quote 1", `{{< figure src="im caption="S" >}}`, "", false, "got pos"},
+		{"unterminated quote 1", `{{< figure src="im" caption="S >}}`, "", false, "unterm"},
 		{"one shortcode, no markup", "{{< tag >}}", "", testScPlaceholderRegexp, ""},
 		{"one shortcode, markup", "{{% tag %}}", "", testScPlaceholderRegexp, ""},
 		{"one pos param", "{{% tag param1 %}}", `tag([\"param1\"], true){[]}"]`, testScPlaceholderRegexp, ""},
@@ -430,7 +430,7 @@ func TestExtractShortcodes(t *testing.T) {
 			if err == nil {
 				t.Fatalf("[%d] %s: ExtractShortcodes didn't return an expected error", i, this.name)
 			} else {
-				r, _ := regexp.Compile(this.expectErrorMsg)
+				r := regexp.MustCompile(this.expectErrorMsg)
 				if !r.MatchString(err.Error()) {
 					t.Fatalf("[%d] %s: ExtractShortcodes didn't return an expected error message, got\n%s but expected\n%s",
 						i, this.name, err.Error(), this.expectErrorMsg)