runtime(html): Restore HTML syntax file tests

Rendered element content results in test failures on macOS and FreeBSD.

The included content for these elements was incidental to the primary
intent of the test to check element tag highlighting so set
g:html_no_rendering to disable content rendering.

FreeBSD fails for even an empty <strike> element.

See #13591 and #14215.

closes: #13595

Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

12 files changed, 331 insertions, 304 deletions

diff --git a/runtime/syntax/testdir/dumps/html_00.dump b/runtime/syntax/testdir/dumps/html_00.dump
index d1b2b91e41..7905a3aabd 100644
--- a/runtime/syntax/testdir/dumps/html_00.dump
+++ b/runtime/syntax/testdir/dumps/html_00.dump
@@ -1,20 +1,20 @@
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-| +0#0000e05&@1|L|a|s|t| |C|h|a|n|g|e|:| |2|0|2|3| |N|o|v| |2|8| +0#0000000&@48
+| +0#0000e05&@1|L|a|s|t| |C|h|a|n|g|e|:| |2|0|2|4| |J|u|n| |1|3| +0#0000000&@48
+| +0#0000e05&@1|V|I|M|_|T|E|S|T|_|S|E|T|U|P| |l|e|t| |g|:|h|t|m|l|_|n|o|_|r|e|n|d|e|r|i|n|g| |=| |1| +0#0000000&@30
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+|,| +0#0000000&@73
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+|e|>| +0#0000000&@72
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diff --git a/runtime/syntax/testdir/dumps/html_01.dump b/runtime/syntax/testdir/dumps/html_01.dump
index c855f7b326..48b11e6aa4 100644
--- a/runtime/syntax/testdir/dumps/html_01.dump
+++ b/runtime/syntax/testdir/dumps/html_01.dump
@@ -1,20 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/html_02.dump b/runtime/syntax/testdir/dumps/html_02.dump
index 9499f2ea0e..bc55823f79 100644
--- a/runtime/syntax/testdir/dumps/html_02.dump
+++ b/runtime/syntax/testdir/dumps/html_02.dump
@@ -1,20 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/html_03.dump b/runtime/syntax/testdir/dumps/html_03.dump
index 088da731e1..4953d71c50 100644
--- a/runtime/syntax/testdir/dumps/html_03.dump
+++ b/runtime/syntax/testdir/dumps/html_03.dump
@@ -1,20 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/html_04.dump b/runtime/syntax/testdir/dumps/html_04.dump
index ef3acf7ffb..b2416e8307 100644
--- a/runtime/syntax/testdir/dumps/html_04.dump
+++ b/runtime/syntax/testdir/dumps/html_04.dump
@@ -1,20 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/html_05.dump b/runtime/syntax/testdir/dumps/html_05.dump
index 411a4f54df..20df53eebd 100644
--- a/runtime/syntax/testdir/dumps/html_05.dump
+++ b/runtime/syntax/testdir/dumps/html_05.dump
@@ -1,20 +1,20 @@
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+|<+0#00e0e07&|s+0#af5f00255&|p|a|n|>+0#00e0e07&|<|/|s+0#af5f00255&|p|a|n|>+0#00e0e07&| +0#0000000&@61
+@57|9|1|,|1| @9|6|3|%| 
diff --git a/runtime/syntax/testdir/dumps/html_06.dump b/runtime/syntax/testdir/dumps/html_06.dump
index 7482dce051..d24392fae6 100644
--- a/runtime/syntax/testdir/dumps/html_06.dump
+++ b/runtime/syntax/testdir/dumps/html_06.dump
@@ -1,20 +1,20 @@
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-|<+0#00e0e07&|t+0#af5f00255&|e|x|t|a|r|e|a|>+0#00e0e07&| +0#0000000&@64
-|<+0#00e0e07&|t+0#af5f00255&|f|o@1|t|>+0#00e0e07&| +0#0000000&@67
-><+0#00e0e07&|t+0#af5f00255&|h|>+0#00e0e07&| +0#0000000&@70
-|<+0#00e0e07&|t+0#af5f00255&|h|e|a|d|>+0#00e0e07&| +0#0000000&@67
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diff --git a/runtime/syntax/testdir/dumps/html_07.dump b/runtime/syntax/testdir/dumps/html_07.dump
index 9c5deaaf80..8a56d4d93f 100644
--- a/runtime/syntax/testdir/dumps/html_07.dump
+++ b/runtime/syntax/testdir/dumps/html_07.dump
@@ -1,20 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/html_08.dump b/runtime/syntax/testdir/dumps/html_08.dump
new file mode 100644
index 0000000000..02a68e7828
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/html_08.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/html_99.dump b/runtime/syntax/testdir/dumps/html_99.dump
index 080a0c6aa4..14866b64de 100644
--- a/runtime/syntax/testdir/dumps/html_99.dump
+++ b/runtime/syntax/testdir/dumps/html_99.dump
@@ -1,20 +1,20 @@
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 @75
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-@75
-|<+0#0000e05&|!|-@1| |E|x|p|e|r|i|m|e|n|t|a|l| |-@1|>| +0#0000000&@53
-><+0#00e0e07&|p+0#0000000&|o|r|t|a|l|>+0#00e0e07&| +0#0000000&@66
-@57|1|4|6|,|1| @8|B|o|t| 
+><+0#00e0e07&|p+0#0000000&|l|a|i|n|t|e|x|t|>+0#00e0e07&| +0#0000000&@63
+@57|1|5|3|,|1| @8|B|o|t| 
diff --git a/runtime/syntax/testdir/input/html.html b/runtime/syntax/testdir/input/html.html
new file mode 100644
index 0000000000..a4d0eb5d8f
--- /dev/null
+++ b/runtime/syntax/testdir/input/html.html
@@ -0,0 +1,153 @@
+<!--
+  HTML Syntax Test File
+  Maintainer: Doug Kearns <dougkearns@gmail.com>
+  Last Change: 2024 Jun 13
+  VIM_TEST_SETUP let g:html_no_rendering = 1
+
+  TODO: Investigate macOS test failures when comparing italicized text with,
+    for example, <em> and <i> elements.  FreeBSD fails with an empty <strike>
+    element. See #13591 and #14215.
+-->
+
+<!-- HTML Elements -->
+<a></a>
+<abbr></abbr>
+<address></address>
+<area>
+<article></article>
+<aside></aside>
+<audio></audio>
+<b>bring attention to</b>
+<base>
+<bdi></bdi>
+<bdo></bdo>
+<blockquote></blockquote>