From 1e4ac0e37714a0d28fd8305cbf8baa06536d0f7d Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Sat, 7 Jun 2025 12:25:33 -0400
Subject: [PATCH] src/svgtiny.c: use case-sensitive comparisons for SVG element
 names

SVG is XML and its element names are therefore case-sensitive. We
switch to case-sensitive comparisons to avoid rendering elements
(e.g. <RECT />) that other SVG clients (e.g. Firefox) will not.
---
 src/svgtiny.c | 31 +++++++++++++++----------------
 1 file changed, 15 insertions(+), 16 deletions(-)

diff --git a/src/svgtiny.c b/src/svgtiny.c
index f5ed89b..d87c568 100644
--- a/src/svgtiny.c
+++ b/src/svgtiny.c
@@ -988,8 +988,7 @@ svgtiny_parse_text(dom_element *text, struct svgtiny_parse_state state)
 				svgtiny_cleanup_state_local(&state);
 				return svgtiny_LIBDOM_ERROR;
 			}
-			if (dom_string_caseless_isequal(nodename,
-							state.interned_tspan))
+			if (dom_string_isequal(nodename, state.interned_tspan))
 				code = svgtiny_parse_text((dom_element *)child,
 							  state);
 			dom_string_unref(nodename);
@@ -1183,29 +1182,29 @@ parse_element(dom_element *element, struct svgtiny_parse_state *state)
 		return svgtiny_LIBDOM_ERROR;
 	}
 
-	if (dom_string_caseless_isequal(state->interned_svg, nodename)) {
+	if (dom_string_isequal(state->interned_svg, nodename)) {
 		code = svgtiny_parse_svg(element, *state);
-	} else if (dom_string_caseless_isequal(state->interned_g, nodename)) {
+	} else if (dom_string_isequal(state->interned_g, nodename)) {
 		code = svgtiny_parse_svg(element, *state);
-	} else if (dom_string_caseless_isequal(state->interned_a, nodename)) {
+	} else if (dom_string_isequal(state->interned_a, nodename)) {
 		code = svgtiny_parse_svg(element, *state);
-	} else if (dom_string_caseless_isequal(state->interned_path, nodename)) {
+	} else if (dom_string_isequal(state->interned_path, nodename)) {
 		code = svgtiny_parse_path(element, *state);
-	} else if (dom_string_caseless_isequal(state->interned_rect, nodename)) {
+	} else if (dom_string_isequal(state->interned_rect, nodename)) {
 		code = svgtiny_parse_rect(element, *state);
-	} else if (dom_string_caseless_isequal(state->interned_circle, nodename)) {
+	} else if (dom_string_isequal(state->interned_circle, nodename)) {
 		code = svgtiny_parse_circle(element, *state);
-	} else if (dom_string_caseless_isequal(state->interned_ellipse, nodename)) {
+	} else if (dom_string_isequal(state->interned_ellipse, nodename)) {
 		code = svgtiny_parse_ellipse(element, *state);
-	} else if (dom_string_caseless_isequal(state->interned_line, nodename)) {
+	} else if (dom_string_isequal(state->interned_line, nodename)) {
 		code = svgtiny_parse_line(element, *state);
-	} else if (dom_string_caseless_isequal(state->interned_polyline, nodename)) {
+	} else if (dom_string_isequal(state->interned_polyline, nodename)) {
 		code = svgtiny_parse_poly(element, *state, false);
-	} else if (dom_string_caseless_isequal(state->interned_polygon, nodename)) {
+	} else if (dom_string_isequal(state->interned_polygon, nodename)) {
 		code = svgtiny_parse_poly(element, *state, true);
-	} else if (dom_string_caseless_isequal(state->interned_text, nodename)) {
+	} else if (dom_string_isequal(state->interned_text, nodename)) {
 		code = svgtiny_parse_text(element, *state);
-	} else if (dom_string_caseless_isequal(state->interned_use, nodename)) {
+	} else if (dom_string_isequal(state->interned_use, nodename)) {
 		code = svgtiny_parse_use(element, *state);
 	}
 	dom_string_unref(nodename);
@@ -1323,7 +1322,7 @@ static svgtiny_code svgtiny_preparse_styles(dom_element *svg,
 				return svgtiny_LIBDOM_ERROR;
 			}
 
-			if (dom_string_caseless_isequal(state.interned_style,
+			if (dom_string_isequal(state.interned_style,
 							nodename)) {
 				/* We have a <style> element, parse it */
 				code = svgtiny_parse_style_element(child,
@@ -1479,7 +1478,7 @@ static svgtiny_code get_svg_element(dom_document *document, dom_element **svg)
 		dom_node_unref(*svg);
 		return svgtiny_LIBDOM_ERROR;
 	}
-	if (!dom_string_caseless_lwc_isequal(svg_name, svg_name_lwc)) {
+	if (!dom_string_lwc_isequal(svg_name, svg_name_lwc)) {
 		lwc_string_unref(svg_name_lwc);
 		dom_string_unref(svg_name);
 		dom_node_unref(*svg);
-- 
2.49.0