Update com.google.fonts/check/varfont/regular_x_coord checks

CHANGELOG.md

@@ -70,6 +70,33 @@ A more detailed list of changes is available in the corresponding milestones for
 
 #### On the FontWerk Profile
   - **[com.fontwerk/check/inconsistencies_between_fvar_stat]:** Fixed bug that resulted in an ERROR when attempting to access `.AxisIndex` of a format 4 AxisValue table (issue #3904)
+  - **[com.adobe.fonts/check/stat_has_axis_value_tables]:** Fixed bug that resulted in an ERROR when attempting to access `.AxisIndex` of a format 4 AxisValue table (issue #3904)
+
+### Changes to existing checks
+#### On the OpenType Profile
+  - **[com.google.fonts/check/varfont/regular_wght_coord]:** The check was modified to distinguish between a font having no regular
+  instance (code: `no-regular-instance`) versus having a regular instance whose wght coord != 400 (existing code `wght-not-400`). (issue #4003)
+  - **[com.google.fonts/check/varfont/regular_wdth_coord]:** The check was modified to distinguish between a font having no regular
+  instance (code: `no-regular-instance`) versus having a regular instance whose wdth coord != 100 (existing code `wdth-not-100`). (issue #4003)
+  - **[com.google.fonts/check/varfont/regular_slnt_coord]:** The check was modified to distinguish between a font having no regular
+  instance (code: `no-regular-instance`) versus having a regular instance whose slnt coord != 100 (existing code `slnt-not-0`). (issue #4003)
+  - **[com.google.fonts/check/varfont/regular_ital_coord]:** The check was modified to distinguish between a font having no regular
+  instance (code: `no-regular-instance`) versus having a regular instance whose ital coord != 100 (existing code `ital-not-0`). (issue #4003)
+  - **[com.google.fonts/check/varfont/regular_opsz_coord]:** The check was modified to distinguish between a font having no regular
+  instance (code: `no-regular-instance`) versus having a regular instance whose opsz is out of range (existing code `opsz-out-of-range`). (issue #4003)
+  - **[com.google.fonts/check/varfont/bold_wght_coord]:** The check was modified to distinguish between a font having no bold
+  instance (code: `no-bold-instance`) versus having a bold instance whose wght coord != 700 (existing code `wght-not-700`). (issue #3898)
+
+#### On the Google Fonts Profile
+  - **[com.google.fonts/check/vertical_metrics]:** Check for positive and negative ascender and descender values (PR #3921)
+
+#### Overridden in the Adobe Fonts Profile
+  - **[com.google.fonts/check/varfont/regular_wght_coord]:** downgrade `no-regular-instance` from FAIL to WARN. (issue #4003)
+  - **[com.google.fonts/check/varfont/regular_wdth_coord]:** downgrade `no-regular-instance` from FAIL to WARN. (issue #4003)
+  - **[com.google.fonts/check/varfont/regular_slnt_coord]:** downgrade `no-regular-instance` from FAIL to WARN. (issue #4003)
+  - **[com.google.fonts/check/varfont/regular_ital_coord]:** downgrade `no-regular-instance` from FAIL to WARN. (issue #4003)
+  - **[com.google.fonts/check/varfont/regular_opsz_coord]:** downgrade `no-regular-instance` from FAIL to WARN. (issue #4003)
+  - **[com.google.fonts/check/varfont/bold_wght_coord]:** downgrade `no-bold-instance` from FAIL to WARN. (issue #3898)
 
 
 ## 0.8.10 (2022-Aug-25)

Lib/fontbakery/profiles/adobefonts.py

@@ -26,7 +26,7 @@
 SET_EXPLICIT_CHECKS = {
     # This is the set of explict checks that will be invoked
     # when fontbakery is run with the 'check-adobefonts' subcommand.
-    # The contents of this set were last updated on December 6, 2022.
+    # The contents of this set were last updated on December 22, 2022.
     #
     # =======================================
     # From adobefonts.py (this file)
@@ -67,11 +67,11 @@
     "com.adobe.fonts/check/varfont/valid_postscript_nameid",
     "com.adobe.fonts/check/varfont/valid_subfamily_nameid",
     "com.google.fonts/check/varfont/bold_wght_coord",  # IS_OVERRIDDEN
-    "com.google.fonts/check/varfont/regular_ital_coord",
-    "com.google.fonts/check/varfont/regular_opsz_coord",
-    "com.google.fonts/check/varfont/regular_slnt_coord",
-    "com.google.fonts/check/varfont/regular_wdth_coord",
-    "com.google.fonts/check/varfont/regular_wght_coord",
+    "com.google.fonts/check/varfont/regular_ital_coord",  # IS_OVERRIDDEN
+    "com.google.fonts/check/varfont/regular_opsz_coord",  # IS_OVERRIDDEN
+    "com.google.fonts/check/varfont/regular_slnt_coord",  # IS_OVERRIDDEN
+    "com.google.fonts/check/varfont/regular_wdth_coord",  # IS_OVERRIDDEN
+    "com.google.fonts/check/varfont/regular_wght_coord",  # IS_OVERRIDDEN
     "com.google.fonts/check/varfont/slnt_range",
     "com.google.fonts/check/varfont/wdth_valid_range",
     "com.google.fonts/check/varfont/wght_valid_range",
@@ -232,6 +232,11 @@
     "com.google.fonts/check/os2_metrics_match_hhea",
     "com.google.fonts/check/valid_glyphnames",
     "com.google.fonts/check/varfont/bold_wght_coord",
+    "com.google.fonts/check/varfont/regular_ital_coord",
+    "com.google.fonts/check/varfont/regular_opsz_coord",
+    "com.google.fonts/check/varfont/regular_slnt_coord",
+    "com.google.fonts/check/varfont/regular_wdth_coord",
+    "com.google.fonts/check/varfont/regular_wght_coord",
     "com.google.fonts/check/whitespace_glyphs",
 ]
 
@@ -580,6 +585,66 @@ def com_adobe_fonts_check_STAT_strings(ttFont):
 )
 
 
+profile.check_log_override(
+    # From fvar.py
+    "com.google.fonts/check/varfont/regular_ital_coord",
+    overrides=(
+        ("no-regular-instance", WARN, KEEP_ORIGINAL_MESSAGE),
+    ),
+    reason=(
+        "Adobe strongly recommends, but does not require having a Regular instance."
+    ),
+)
+
+
+profile.check_log_override(
+    # From fvar.py
+    "com.google.fonts/check/varfont/regular_opsz_coord",
+    overrides=(
+        ("no-regular-instance", WARN, KEEP_ORIGINAL_MESSAGE),
+    ),
+    reason=(
+        "Adobe strongly recommends, but does not require having a Regular instance."
+    ),
+)
+
+
+profile.check_log_override(
+    # From fvar.py
+    "com.google.fonts/check/varfont/regular_slnt_coord",
+    overrides=(
+        ("no-regular-instance", WARN, KEEP_ORIGINAL_MESSAGE),
+    ),
+    reason=(
+        "Adobe strongly recommends, but does not require having a Regular instance."
+    ),
+)
+
+
+profile.check_log_override(
+    # From fvar.py
+    "com.google.fonts/check/varfont/regular_wdth_coord",
+    overrides=(
+        ("no-regular-instance", WARN, KEEP_ORIGINAL_MESSAGE),
+    ),
+    reason=(
+        "Adobe strongly recommends, but does not require having a Regular instance."
+    ),
+)
+
+
+profile.check_log_override(
+    # From fvar.py
+    "com.google.fonts/check/varfont/regular_wght_coord",
+    overrides=(
+        ("no-regular-instance", WARN, KEEP_ORIGINAL_MESSAGE),
+    ),
+    reason=(
+        "Adobe strongly recommends, but does not require having a Regular instance."
+    ),
+)
+
+
 profile.check_log_override(
     # From fvar.py
     "com.adobe.fonts/check/varfont/valid_default_instance_nameids",

Lib/fontbakery/profiles/fvar.py

@@ -26,7 +26,11 @@ def com_google_fonts_check_varfont_regular_wght_coord(ttFont, regular_wght_coord
     """The variable font 'wght' (Weight) axis coordinate must be 400 on the
     'Regular' instance."""
 
-    if regular_wght_coord == 400:
+    if regular_wght_coord is None:
+        yield FAIL,\
+              Message("no-regular-instance",
+              '"Regular" instance not present.')
+    elif regular_wght_coord == 400:
         yield PASS, "Regular:wght is 400."
     else:
         yield FAIL,\
@@ -53,7 +57,11 @@ def com_google_fonts_check_varfont_regular_wght_coord(ttFont, regular_wght_coord
 def com_google_fonts_check_varfont_regular_wdth_coord(ttFont, regular_wdth_coord):
     """The variable font 'wdth' (Width) axis coordinate must be 100 on the 'Regular' instance."""
 
-    if regular_wdth_coord == 100:
+    if regular_wdth_coord is None:
+        yield FAIL,\
+              Message("no-regular-instance",
+              '"Regular" instance not present.')
+    elif regular_wdth_coord == 100:
         yield PASS, "Regular:wdth is 100."
     else:
         yield FAIL,\
@@ -80,7 +88,11 @@ def com_google_fonts_check_varfont_regular_wdth_coord(ttFont, regular_wdth_coord
 def com_google_fonts_check_varfont_regular_slnt_coord(ttFont, regular_slnt_coord):
     """The variable font 'slnt' (Slant) axis coordinate must be zero on the 'Regular' instance."""
 
-    if regular_slnt_coord == 0:
+    if regular_slnt_coord is None:
+        yield FAIL, \
+              Message("no-regular-instance",
+              '"Regular" instance not present.')
+    elif regular_slnt_coord == 0:
         yield PASS, "Regular:slnt is zero."
     else:
         yield FAIL,\
@@ -107,7 +119,11 @@ def com_google_fonts_check_varfont_regular_slnt_coord(ttFont, regular_slnt_coord
 def com_google_fonts_check_varfont_regular_ital_coord(ttFont, regular_ital_coord):
     """The variable font 'ital' (Italic) axis coordinate must be zero on the 'Regular' instance."""
 
-    if regular_ital_coord == 0:
+    if regular_ital_coord is None:
+        yield FAIL, \
+              Message("no-regular-instance",
+              '"Regular" instance not present.')
+    elif regular_ital_coord == 0:
         yield PASS, "Regular:ital is zero."
     else:
         yield FAIL,\
@@ -129,13 +145,17 @@ def com_google_fonts_check_varfont_regular_ital_coord(ttFont, regular_ital_coord
         a value in the range 10 to 16.
     """,
     conditions = ['is_variable_font',
-                  'regular_opsz_coord'],
+                  'has_opsz_axis'],
     proposal = 'https://github.com/googlefonts/fontbakery/issues/1707'
 )
 def com_google_fonts_check_varfont_regular_opsz_coord(ttFont, regular_opsz_coord):
     """The variable font 'opsz' (Optical Size) axis coordinate should be between 10 and 16 on the 'Regular' instance."""
 
-    if regular_opsz_coord >= 10 and regular_opsz_coord <= 16:
+    if regular_opsz_coord is None:
+        yield FAIL, \
+              Message("no-regular-instance",
+              '"Regular" instance not present.')
+    elif regular_opsz_coord >= 10 and regular_opsz_coord <= 16:
         yield PASS, f"Regular:opsz coordinate ({regular_opsz_coord}) looks good."
     else:
         yield WARN,\

Lib/fontbakery/profiles/shared_conditions.py

@@ -382,6 +382,12 @@ def has_ital_axis(ttFont):
         return True
 
 
+@condition
+def has_opsz_axis(ttFont):
+    if is_variable_font(ttFont) and "opsz" in get_axis_tags_set(ttFont):
+        return True
+
+
 def get_instance_axis_value(ttFont, instance_name, axis_tag):
     if not is_variable_font(ttFont):
         return None

tests/profiles/fvar_test.py

@@ -34,7 +34,8 @@ def test_check_varfont_regular_wght_coord():
     # Change the name of the first instance from 'Regular' (nameID 258)
     # to 'Medium' (nameID 259). The font now has no Regular instance.
     ttFont["fvar"].instances[0].subfamilyNameID = 259
-    assert_results_contain(check(ttFont), FAIL, "wght-not-400")
+    msg = assert_results_contain(check(ttFont), FAIL, "no-regular-instance")
+    assert msg == ('"Regular" instance not present.')
 
     # Test with a variable font that doesn't have a 'wght' (Weight) axis.
     # The check should yield SKIP.
@@ -76,7 +77,8 @@ def test_check_varfont_regular_wdth_coord():
     # Change the name of the first instance from 'Regular' (nameID 258)
     # to 'Medium' (nameID 259). The font now has no Regular instance.
     ttFont["fvar"].instances[0].subfamilyNameID = 259
-    assert_results_contain(check(ttFont), FAIL, "wdth-not-100")
+    msg = assert_results_contain(check(ttFont), FAIL, "no-regular-instance")
+    assert msg == ('"Regular" instance not present.')
 
     # Test with a variable font that doesn't have a 'wdth' (Width) axis.
     # The check should yield SKIP.
@@ -127,7 +129,8 @@ def test_check_varfont_regular_slnt_coord():
     # Change the name of the first instance from 'Regular' (nameID 258)
     # to 'Medium' (nameID 259). The font now has no Regular instance.
     first_instance.subfamilyNameID = 259
-    assert_results_contain(check(ttFont), FAIL, "slnt-not-0")
+    msg = assert_results_contain(check(ttFont), FAIL, "no-regular-instance")
+    assert msg == ('"Regular" instance not present.')
 
     # Test with a variable font that doesn't have a 'slnt' (Slant) axis.
     # The check should yield SKIP.
@@ -174,7 +177,8 @@ def test_check_varfont_regular_ital_coord():
     # Change the name of the first instance from 'Regular' (nameID 258)
     # to 'Medium' (nameID 259). The font now has no Regular instance.
     first_instance.subfamilyNameID = 259
-    assert_results_contain(check(ttFont), FAIL, "ital-not-0")
+    msg = assert_results_contain(check(ttFont), FAIL, "no-regular-instance")
+    assert msg == ('"Regular" instance not present.')
 
     # Test with a variable font that doesn't have an 'ital' (Italic) axis.
     # The check should yield SKIP.
@@ -204,7 +208,8 @@ def test_check_varfont_regular_opsz_coord():
     ttFont["fvar"].axes.append(new_axis)
 
     # and specify a bad coordinate for the Regular:
-    ttFont["fvar"].instances[0].coordinates["opsz"] = 9
+    first_instance = ttFont["fvar"].instances[0]
+    first_instance.coordinates["opsz"] = 9
     # Note: I know the correct instance index for this hotfix because
     # I inspected the our reference CabinVF using ttx
 
@@ -224,6 +229,12 @@ def test_check_varfont_regular_opsz_coord():
         assert_PASS(check(ttFont, {"regular_opsz_coord": value}),
                     f'with a good Regular:opsz coordinate ({value})...')
 
+    # Change the name of the first instance from 'Regular' (nameID 258)
+    # to 'Medium' (nameID 259). The font now has no Regular instance.
+    first_instance.subfamilyNameID = 259
+    msg = assert_results_contain(check(ttFont), FAIL, "no-regular-instance")
+    assert msg == ('"Regular" instance not present.')
+
 
 def test_check_varfont_bold_wght_coord():
     """ The variable font 'wght' (Weight) axis coordinate