Add various other check rationales

com.google.fonts/check/maxadvancewidth
com.google.fonts/check/loca/maxp_num_glyphs
com.google.fonts/check/name/no_copyright_on_description
com.adobe.fonts/check/postscript_name
com.google.fonts/check/family_naming_recommendations
On the Open Type Profile.

(PR #4570)

CHANGELOG.md

@@ -37,6 +37,11 @@ A more detailed list of changes is available in the corresponding milestones for
   - **[com.google.fonts/check/glyf_unused_data]:** Added rationale. (PR #4570)
   - **[com.google.fonts/check/points_out_of_bounds]:** Added rationale. (PR #4570)
   - **[com.google.fonts/check/gpos_kerning_info]:** Added rationale. (PR #4570)
+  - **[com.google.fonts/check/maxadvancewidth]:** Added rationale. (PR #4570)
+  - **[com.google.fonts/check/loca/maxp_num_glyphs]:** Added rationale. (PR #4570)
+  - **[com.google.fonts/check/name/no_copyright_on_description]:** Added rationale. (PR #4570)
+  - **[com.adobe.fonts/check/postscript_name]:** Added rationale. (PR #4570)
+  - **[com.google.fonts/check/family_naming_recommendations]:** Added rationale. (PR #4570)
 
 
 ## 0.12.0a2 (2024-Feb-21)

Lib/fontbakery/checks/opentype/hhea.py

@@ -3,7 +3,15 @@
 from fontbakery.message import Message
 
 
-@check(id="com.google.fonts/check/maxadvancewidth", proposal="legacy:check/073")
+@check(
+    id="com.google.fonts/check/maxadvancewidth",
+    proposal="legacy:check/073",
+    rationale="""
+        The 'hhea' table contains a field which specifies the maximum
+        advance width. This value should be consistent with the maximum
+        advance width of all glyphs specified in the 'hmtx' table.
+       """,
+)
 def com_google_fonts_check_maxadvancewidth(ttFont):
     """MaxAdvanceWidth is consistent with values in the Hmtx and Hhea tables?"""
 

Lib/fontbakery/checks/opentype/loca.py

@@ -7,6 +7,13 @@
     id="com.google.fonts/check/loca/maxp_num_glyphs",
     conditions=["is_ttf"],
     proposal="legacy:check/180",
+    rationale="""
+        The 'maxp' table contains various statistics about the font, including the
+        number of glyphs in the font. The 'loca' table contains the offsets to the
+        locations of the glyphs in the font. The number of offsets in the 'loca' table
+        should match the number of glyphs in the 'maxp' table. A failure here indicates
+        a problem with the font compiler.
+    """,
 )
 def com_google_fonts_check_loca_maxp_num_glyphs(ttFont):
     """Does the number of glyphs in the loca table match the maxp table?"""

Lib/fontbakery/checks/opentype/name.py

@@ -45,6 +45,12 @@ def com_adobe_fonts_check_name_empty_records(ttFont):
 @check(
     id="com.google.fonts/check/name/no_copyright_on_description",
     proposal="legacy:check/031",
+    rationale="""
+        The name table in a font file contains strings about the font;
+        there are entries for a copyright field and a description. If the
+        copyright entry is being used correctly, then there should not
+        be any copyright information in the description entry.
+    """,
 )
 def com_google_fonts_check_name_no_copyright_on_description(ttFont):
     """Description strings in the name table must not contain copyright info."""
@@ -417,6 +423,11 @@ def com_google_fonts_check_name_match_familyname_fullfont(ttFont):
 @check(
     id="com.adobe.fonts/check/postscript_name",
     proposal="https://github.com/miguelsousa/openbakery/issues/62",
+    rationale="""
+        The PostScript name is used by some applications to identify the font.
+        It should only consist of characters from the set A-Z, a-z, 0-9, and hyphen.
+
+    """,
 )
 def com_adobe_fonts_check_postscript_name(ttFont):
     """PostScript name follows OpenType specification requirements?"""
@@ -453,6 +464,11 @@ def com_adobe_fonts_check_postscript_name(ttFont):
 @check(
     id="com.google.fonts/check/family_naming_recommendations",
     proposal="legacy:check/071",
+    rationale="""
+        This check ensures that the length of various family name and style
+        name strings in the name table are within the maximum length
+        recommended by the OpenType specification.
+    """,
 )
 def com_google_fonts_check_family_naming_recommendations(ttFont):
     """Font follows the family naming recommendations?"""