Bug 251058 – Safari's Intl.NumberFormat does not support formatting of MYR (Malaysian) currencies

• Component: JavaScriptCore
• Status: RESOLVED INVALID

Created attachment 464622 [details]
Safari console replication of formatting MYR currencies with Intl.NumberFormat

Hi team, currently Safari's Intl.NumberFormat does not seem to support MYR currencies, the `format` function outputs weird symbols.


For e.g.


```js
const formatter = new Intl.NumberFormat("MY", {
    style: 'currency',
    currency: "MYR",
    currencyDisplay: 'narrowSymbol',
    minimumFractionDigits: 0,
    maximumFractionDigits: 0
  });

formatter.format(123);

// output is ၁၂၃ RM, instead of RM123
```

Note that Chrome is formatting correctly and does not have this output.

[Karl Dubost]

James, 

I get the same result in Firefox and Safari. 

but the code for Malaysia is ms-MY

so it should be either: 

const formatter = new Intl.NumberFormat("ms-MY", {…
OR 
const formatter = new Intl.NumberFormat("ms", {…

nope?

https://www.loc.gov/standards/iso639-2/php/langcodes_name.php?iso_639_1=ms


my is the code for Burmese
https://www.loc.gov/standards/iso639-2/php/langcodes_name.php?iso_639_1=my

Bug in Chrome?

[Yusuke Suzuki]

This is V8's bug. V8 is not supporting "MY" locale, and falling back to en-US.

```
const formatter = new Intl.NumberFormat("MY", {
    style: 'currency',
    currency: "MYR",
    currencyDisplay: 'narrowSymbol',
    minimumFractionDigits: 0,
    maximumFractionDigits: 0
  });

print(JSON.stringify(formatter.resolvedOptions()));
print(formatter.format(123));
```

JSC
$ VM=~/dev/OpenSource/WebKitBuild/Debug; DYLD_FRAMEWORK_PATH=$VM $VM/jsc tmp/test.js
{"locale":"my","numberingSystem":"mymr","style":"currency","currency":"MYR","currencyDisplay":"narrowSymbol","currencySign":"standard","minimumIntegerDigits":1,"minimumFractionDigits":0,"maximumFractionDigits":0,"useGrouping":"auto","notation":"standard","signDisplay":"auto","roundingMode":"halfExpand","roundingIncrement":1,"trailingZeroDisplay":"auto","roundingPriority":"auto"}
၁၂၃ RM

V8
$ v8 tmp/test.js
{"locale":"en-US","numberingSystem":"latn","style":"currency","currency":"MYR","currencyDisplay":"narrowSymbol","currencySign":"standard","minimumIntegerDigits":1,"minimumFractionDigits":0,"maximumFractionDigits":0,"useGrouping":"auto","notation":"standard","signDisplay":"auto","roundingMode":"halfExpand","roundingIncrement":1,"trailingZeroDisplay":"auto","roundingPriority":"auto"}
RM 123

SpiderMonkey
$ sm tmp/test.js
{"locale":"my","numberingSystem":"mymr","style":"currency","currency":"MYR","currencyDisplay":"narrowSymbol","currencySign":"standard","minimumIntegerDigits":1,"minimumFractionDigits":0,"maximumFractionDigits":0,"useGrouping":"auto","notation":"standard","signDisplay":"auto","roundingMode":"halfExpand","roundingIncrement":1,"trailingZeroDisplay":"auto","roundingPriority":"auto"}
၁၂၃ RM

thanks @karl and @yusuke for the support! In conclusion, our side has made a mistake to use MY instead of ms-MY for malaysia, and seems like chrome v8 does not support MY and falls back to en-US