Don't forget to set stretch when exporting font as svg reference.

anntzer · anntzer · commit beec11aee229 · 2020-02-13T01:02:49.000+01:00
Also reordered properties to match the css standard https://drafts.csswg.org/css-fonts-3/#basic-font-props
diff --git a/lib/matplotlib/backends/backend_svg.py b/lib/matplotlib/backends/backend_svg.py
@@ -1027,11 +1027,12 @@ def _draw_text_as_text(self, gc, x, y, s, prop, angle, ismath, mtext=None):
             font.set_text(s, 0.0, flags=LOAD_NO_HINTING)
 
             attrib = {}
-            # Must add "px" to workaround a Firefox bug
-            style['font-size'] = short_float_fmt(prop.get_size()) + 'px'
             style['font-family'] = str(font.family_name)
-            style['font-style'] = prop.get_style().lower()
             style['font-weight'] = str(prop.get_weight()).lower()
+            style['font-stretch'] = str(prop.get_stretch()).lower()
+            style['font-style'] = prop.get_style().lower()
+            # Must add "px" to workaround a Firefox bug
+            style['font-size'] = short_float_fmt(prop.get_size()) + 'px'
             attrib['style'] = generate_css(style)
 
             if mtext and (angle == 0 or mtext.get_rotation_mode() == "anchor"):
diff --git a/lib/matplotlib/tests/test_backend_svg.py b/lib/matplotlib/tests/test_backend_svg.py
@@ -141,6 +141,8 @@ def test_svgnone_with_data_coordinates():
         buf = fd.read().decode()
 
     assert expected in buf
+    for prop in ["family", "weight", "stretch", "style", "size"]:
+        assert f"font-{prop}:" in buf
 
 
 def test_gid():
