Potentially unifiable glyphs in Source Han Serif v2.001
tamcy opened this issue · comments
I noticed a number of glyphs in Source Han Serif 2.001 that are potentially mergeable and here is a summary of them. I hope it can help freeing up a few more CIDs for use.
The list contains visually identical glyphs or those with only minor differences such that merging them should not impose any redesigning effort nor further inconsistency. I tried to skip those that may cause a debate (like whether a regional standard should be followed or not; I think it's better to leave this to another issue).
Remarks are subjective, they are written from a Hong Kong user's perspective.
I am only listing the relevant codepoints in this comment. For a listing of codepoints with glyph shapes, please refer to this PDF file. The PDF is produced from an HTML document which I am also attaching the source files here in case you may find it useful. (The HTML file unifiable-codepoints.html is a template. All items are defined in items.js, and app.js is responsible for visualizing the data to the HTML.)
Codepoint list
A.1. Visually identical, glyph accessible by base glyph
| ID | Codepoint | Character |
|---|---|---|
| A.1.1 | U+406F | 䁯 |
| A.1.2 | U+4D77 | 䵷 |
| A.1.3 | U+4E0F | 丏 |
| A.1.4 | U+4E10 | 丐 |
| A.1.5 | U+4F72 | 佲 |
| A.1.6 | U+503B | 倻 |
| A.1.9 | U+53E1 | 叡 |
| A.1.8 | U+537A | 卺 |
| A.1.10 | U+5413 | 吓 |
| A.1.11 | U+55A9 | 喩 |
| A.1.12 | U+55E1 | 嗡 |
| A.1.13 | U+564F | 噏 |
| A.1.14 | U+57E6 | 埦 |
| A.1.15 | U+5ADD | 嫝 |
| A.1.16 | U+58D1 | 壑 |
| A.1.17 | U+5BF3 | 寳 |
| A.1.18 | U+5EB7 | 康 |
| A.1.19 | U+5F31 | 弱 |
| A.1.20 | U+5F54 | 彔 |
| A.1.21 | U+6177 | 慷 |
| A.1.22 | U+6240 | 所 |
| A.1.23 | U+63C7 | 揇 |
| A.1.24 | U+6960 | 楠 |
| A.1.25 | U+6A59 | 橙 |
| A.1.26 | U+6B9F | 殟 |
| A.1.27 | U+6E71 | 湱 |
| A.1.28 | U+7023 | 瀣 |
| A.1.29 | U+706B | 火 |
| A.1.30 | U+708E | 炎 |
| A.1.31 | U+72C4 | 狄 |
| A.1.32 | U+73E1 | 珡 |
| A.1.33 | U+73E4 | 珤 |
| A.1.34 | U+76FE | 盾 |
| A.1.35 | U+7CD1 | 糑 |
| A.1.36 | U+7C72 | 籲 |
| A.1.37 | U+7F71 | 罱 |
| A.1.38 | U+7FDD | 翝 |
| A.1.39 | U+7FE6 | 翦 |
| A.1.40 | U+8020 | 耠 |
| A.1.41 | U+82E4 | 苤 |
| A.1.42 | U+877B | 蝻 |
| A.1.43 | U+8789 | 螉 |
| A.1.44 | U+88D8 | 裘 |
| A.1.45 | U+8EB6 | 躶 |
| A.1.46 | U+96B6 | 隶 |
| A.1.47 | U+92F3 | 鋳 |
| A.1.48 | U+93CB | 鏋 |
| A.1.49 | U+9ACA | 髊 |
| A.1.50 | U+9C2F | 鰯 |
| A.1.51 | U+9D02 | 鴂 |
| A.1.52 | U+21336 | 𡌶 |
| A.1.53 | U+26951 | 𦥑 |
A.2. Visually identical, glyph only accessible via variation sequence
| ID | Codepoint | Character |
|---|---|---|
| A.2.1 | U+4E30 | 丰 |
| A.2.2 | U+50CF | 像 |
| A.2.3 | U+5300 | 匀 |
| A.2.4 | U+74CA | 瓊 |
| A.2.5 | U+8987 | 覇 |
| A.2.6 | U+9873 | 顳 |
B.1. Minor differences (全)
The width of the top horizontal line should be a typeface design decision, not worth dedicating new glyphs for TW. See also U+9293 銓, U+8DE7 跧, U+8F07 輇, U+6D24 洤, U+5168 全 and U+4F7A 佺 - JP glyphs are used for TW. This is unlike the component 分 or 八 where a separate glyph set is provided for TW.
| ID | Codepoint | Character |
|---|---|---|
| B.1.1 | U+4F7A | 佺 |
| B.1.2 | U+62F4 | 拴 |
| B.1.3 | U+6813 | 栓 |
| B.1.4 | U+7277 | 牷 |
B.2. Minor differences (癸)
The only difference is that the last stroke of 天 touches the second last stroke in uni9368-HK. Probably not worth a separate glyph. See also U+4906 䤆 (dedicated HK glyph), U+63C6 揆 (uses JP glyph), U+8067 聧 (uses TW glyph) - they are all designed with the strokes touched.
| ID | Codepoint | Character |
|---|---|---|
| B.2.1 | U+9368 | 鍨 |
B.3. Minor differences (求)
The only difference is whether the 4th stroke of 求 touches the vertical stroke with hook. After checking a few fonts from type foundries that produce Simplified Chinese typefaces, I believe this should be a pure design choice and a separate design for CN is not necessary. Also see U+6344 捄, U+6882 梂, U+6B8F 殏, U+76DA 盚 and U+86F7 蛷 - JP glyphs are used for CN.
| ID | Codepoint | Character |
|---|---|---|
| B.3.1 | U+4FC5 | 俅 |
| B.3.2 | U+6551 | 救 |
| B.3.3 | U+7403 | 球 |
Also of note, 県 (U+770C) in CN (red) and HK (blue) can be unified. It falls under your category of A.1. Visually identical, glyph accessible by base glyph.
