Why Hong Kong place names don't follow Jyutping
荃灣 is Tsuen Wan and 杏花邨 is Heng Fa Chuen, though 荃 and 邨 sound the same. We converted 2,870 official Hong Kong na...
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How Zhuyin (bopomofo) maps to pinyin, and where a simple chart goes wrong
Zhuyin's 37 symbols line up with pinyin letters, so a chart gets you most of the way. But against every syllable in Taiw...
Converting one passage between mainland, Taiwan and Hong Kong punctuation
Taiwan centres its full stops and the mainland puts them bottom left, yet it is the same character. Here is one passage...
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Why common Cantonese characters like 嘅 and 咗 could not be typed in Big5
Eleven of the most-used written Cantonese characters, including 嘅, 咗 and 喺, could not be typed in Big5, the tradition...
Why a Chinese character that works in GBK can break in Big5
GB2312, GBK and Big5 write the same Chinese character with different bytes, and none of them can write every character....
Stripping the dots from an email address can merge two different people
Only Gmail's consumer domain and Proton document dots as ignorable. On Google Workspace dots change the address, so two...
The payment QR on the counter is a line of text you can read
ASEAN merchant payment codes all use one published format: a flat string of tag, length and value. Decoding a real paylo...
No ASEAN country has opened the whole 6 GHz band, and China opened none of it
Six ASEAN countries released the bottom 500 MHz of the 6 GHz band and stopped; the United States released all 1,200. Onl...
127.0.0.1 is one of sixteen million loopback addresses
IPv4 reserved the whole of 127.0.0.0/8 for loopback, and the RFC that did it never names 127.0.0.1. Whether the other 16...
WCAG asks for 24 pixels, not the 44 everyone quotes
The 44-pixel tap target is quoted everywhere as the accessibility requirement. It is WCAG's Level AAA figure. The criter...
Z and +00:00 stopped being the same thing in 2024
RFC 9557 moved Z across to mean the instant is known and the local offset is not, while +00:00 kept its older meaning. T...
Valid JSON is not one thing, and three runtimes prove it
A fourteen-byte document containing a lone surrogate escape parses in Node, parses in Python and is refused by PHP — all...
Four ASEAN countries have no time zone of their own
Asia/Phnom_Penh, Asia/Vientiane, Asia/Kuala_Lumpur and Asia/Brunei are not time zones. They are links, and the files beh...
One cron line, three different answers
Ask three tools how often 0 0 */2 * 1 runs in September 2026 and you get two firings, seventeen, or four. Cron switches...
MCP deleted the handshake every tutorial teaches
The Model Context Protocol revision of 28 July 2026 removed the initialize handshake, the session header and the server'...
How to Self-Host Home Assistant with Docker
Running the container instead of a supervised install gives up the add-on store, which is a real trade. And bridge netwo...
How to Self-Host Gitea or Forgejo with Docker
The environment variable that closes public registration was renamed, so copying an older tutorial leaves your git host...
How to Self-Host Nextcloud with Docker
The first decision is not a setting: there are two official deployment routes and they are not variations on each other....
Why fancy text breaks search and screen readers
The bold and script letters people put in bios are not a font. They are mathematical notation, and the standard that def...
How to Back Up a Docker Stack
Every self-hosting guide ends by telling you to back it up and none of them say how. Three things live in different plac...
How to Set Up Caddy as a Reverse Proxy with Docker
Caddy gets certificates without being asked, which is why it is the right first reverse proxy. The confusion starts with...
How to Self-Host Immich with Docker
Serving photographs is easy. Recognising the faces in them is what decides whether the installation is comfortable or mi...
How to Self-Host Jellyfin with Docker
The decisions that are awkward to undo are all made in the first ten minutes: mount media read-only, choose paths you ca...
How to Self-Host Paperless-ngx with Docker
Three of its requirements are about the host rather than the application. The user IDs have to match or nothing gets con...
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