Chinese text with `：［` does not align properly

[sati-bodhi]

The algorithm fails to work with ：　when it is followed by 「, which is very common in Traditional Chinese. Font used in this example is Noto Sans Mono CJK TC.

| Testing                                               | 123                                                           |
| :---------------------------------------------------- | :------------------------------------------------------------ |
| English content                                       | works.                                                        |
| 中文也可以。                                          | Chinese too.                                                  |
| 「這樣也」可以。                                      |                                                               |
| 你說：「怎麼辦？」                                    | But this doesn't work.                                        |
| ：                                                    | Colon alone works.                                            |
| 《書名號》：                                          | Breaks when colon is next to another punctuation...           |
| ：：                                                  | ...which is not another colon.                                |
| 你說：「怎麼辦？」我說：「不知道！」《經典》說：「…」 | Alignment gets wild when multiple `「：`s are used in a line. |

[sati-bodhi]

Update: commas ，「, semicolons ；「 when coupled with another punctuation break the alignment as well.

| Testing                                               | 123                                                           |
| :---------------------------------------------------- | :------------------------------------------------------------ |
| English content                                       | works.                                                        |
| 中文也可以。                                          | Chinese too.                                                  |
| 「這樣也」可以。                                      |                                                               |
| 你說：「怎麼辦？」                                    | But this doesn't work.                                        |
| ：                                                    | Colon alone works.                                            |
| 《書名號》：                                          | Breaks when colon is next to another punctuation...           |
| ：：                                                  | ...which is not another colon.                                |
| 你說：「怎麼辦？」我說：「不知道！」《經典》說：「…」 | Alignment gets wild when multiple `「：`s are used in a line. |
| ，《                                                  |                                                               |