Enable descriptive header IDs.

Enable blackfriday.EXTENSION_AUTO_HEADER_IDS to generate the name of the
header ID from the text in the header. Works for prefix and underline
headers.

- TOC extraction had to be modified to look for `<li><a href="#`>
  instead of `#toc_` because of this change.
- Fixed a number of tests that depended on the presence of `toc_` with
  as an `id` or as a `href` value.
- Renames the earlier parameter `footnoteref` to `documentId` as it more
  accurately represents the nature of the parameter. The `documentId` is
  appended to all generated headers through the new HTML renderer
  parameter `HeaderIDSuffix`.

1 files changed, 2 insertions, 2 deletions

diff --git a/hugolib/page_test.go b/hugolib/page_test.go
index 42e12a3a4..178c72d0e 100644
--- a/hugolib/page_test.go
+++ b/hugolib/page_test.go
@@ -368,8 +368,8 @@ func TestTableOfContents(t *testing.T) {
 	if err != nil {
 		t.Fatalf("Unable to create a page with frontmatter and body content: %s", err)
 	}
-	checkPageContent(t, p, "\n\n<p>For some moments the old man did not reply. He stood with bowed head, buried in deep thought. But at last he spoke.</p>\n\n<h2 id=\"toc_0\">AA</h2>\n\n<p>I have no idea, of course, how long it took me to reach the limit of the plain,\nbut at last I entered the foothills, following a pretty little canyon upward\ntoward the mountains. Beside me frolicked a laughing brooklet, hurrying upon\nits noisy way down to the silent sea. In its quieter pools I discovered many\nsmall fish, of four-or five-pound weight I should imagine. In appearance,\nexcept as to size and color, they were not unlike the whale of our own seas. As\nI watched them playing about I discovered, not only that they suckled their\nyoung, but that at intervals they rose to the surface to breathe as well as to\nfeed upon certain grasses and a strange, scarlet lichen which grew upon the\nrocks just above the water line.</p>\n\n<h3 id=\"toc_1\">AAA</h3>\n\n<p>I remember I felt an extraordinary persuasion that I was being played with,\nthat presently, when I was upon the very verge of safety, this mysterious\ndeath&ndash;as swift as the passage of light&ndash;would leap after me from the pit about\nthe cylinder and strike me down. ## BB</p>\n\n<h3 id=\"toc_2\">BBB</h3>\n\n<p>&ldquo;You&rsquo;re a great Granser,&rdquo; he cried delightedly, &ldquo;always making believe them little marks mean something.&rdquo;</p>\n")
-	checkPageTOC(t, p, "<nav id=\"TableOfContents\">\n<ul>\n<li>\n<ul>\n<li><a href=\"#toc_0\">AA</a>\n<ul>\n<li><a href=\"#toc_1\">AAA</a></li>\n<li><a href=\"#toc_2\">BBB</a></li>\n</ul></li>\n</ul></li>\n</ul>\n</nav>")
+	checkPageContent(t, p, "\n\n<p>For some moments the old man did not reply. He stood with bowed head, buried in deep thought. But at last he spoke.</p>\n\n<h2 id=\"aa:90b9174a5bdb091a9625b04adac96ca6\">AA</h2>\n\n<p>I have no idea, of course, how long it took me to reach the limit of the plain,\nbut at last I entered the foothills, following a pretty little canyon upward\ntoward the mountains. Beside me frolicked a laughing brooklet, hurrying upon\nits noisy way down to the silent sea. In its quieter pools I discovered many\nsmall fish, of four-or five-pound weight I should imagine. In appearance,\nexcept as to size and color, they were not unlike the whale of our own seas. As\nI watched them playing about I discovered, not only that they suckled their\nyoung, but that at intervals they rose to the surface to breathe as well as to\nfeed upon certain grasses and a strange, scarlet lichen which grew upon the\nrocks just above the water line.</p>\n\n<h3 id=\"aaa:90b9174a5bdb091a9625b04adac96ca6\">AAA</h3>\n\n<p>I remember I felt an extraordinary persuasion that I was being played with,\nthat presently, when I was upon the very verge of safety, this mysterious\ndeath&ndash;as swift as the passage of light&ndash;would leap after me from the pit about\nthe cylinder and strike me down. ## BB</p>\n\n<h3 id=\"bbb:90b9174a5bdb091a9625b04adac96ca6\">BBB</h3>\n\n<p>&ldquo;You&rsquo;re a great Granser,&rdquo; he cried delightedly, &ldquo;always making believe them little marks mean something.&rdquo;</p>\n")
+	checkPageTOC(t, p, "<nav id=\"TableOfContents\">\n<ul>\n<li>\n<ul>\n<li><a href=\"#aa:90b9174a5bdb091a9625b04adac96ca6\">AA</a>\n<ul>\n<li><a href=\"#aaa:90b9174a5bdb091a9625b04adac96ca6\">AAA</a></li>\n<li><a href=\"#bbb:90b9174a5bdb091a9625b04adac96ca6\">BBB</a></li>\n</ul></li>\n</ul></li>\n</ul>\n</nav>")
 }
 
 func TestPageWithMoreTag(t *testing.T) {