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[MDEV-27137] command line client : using emoji breaks formatting, due to incorrectly calculated char width Created: 2021-11-29 Updated: 2023-04-27 |
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| Status: | Open |
| Project: | MariaDB Server |
| Component/s: | Character Sets, Scripts & Clients |
| Affects Version/s: | 10.2, 10.3, 10.4, 10.5, 10.6, 10.7 |
| Fix Version/s: | 10.4, 10.5, 10.6 |
| Type: | Bug | Priority: | Major |
| Reporter: | Vladislav Vaintroub | Assignee: | Alexander Barkov |
| Resolution: | Unresolved | Votes: | 0 |
| Labels: | None | ||
| Attachments: |
image-2021-11-29-10-28-29-351.png
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| Description |
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table is incorrectly formatted, if emoji is used .utf8mb4 is used on client. This is not specific to Windows, it is about numcells charset method, which should be returning 2 (as it takes the same width as Chinese in the example, i.e , double width of a narrow character in monospace font). The "width" of a character is defined in https://unicode.org/Public/UCD/latest/ucd/EastAsianWidth.txt (the name is largely historical, since this file existed back in Unicode 2.0 already, long time before emoji). For example following line is included
I used 1F600 in the attached example. Currently, my_numcells_mb() only handles CJK Ideograph Extension B, C , outside of BMP. but nothing in emoji range |
