[Issue 21131] New: Appender with string does not process UTF input ranges properly
d-bugmail at puremagic.com
d-bugmail at puremagic.com
Fri Aug 7 00:37:56 UTC 2020
https://issues.dlang.org/show_bug.cgi?id=21131
Issue ID: 21131
Summary: Appender with string does not process UTF input ranges
properly
Product: D
Version: D2
Hardware: x86
OS: Mac OS X
Status: NEW
Severity: enhancement
Priority: P1
Component: phobos
Assignee: nobody at puremagic.com
Reporter: schveiguy at yahoo.com
When putting ranges of code units into an appender of a different width string,
Appender uses integer promotion instead of decoding and reencoding to append to
the string.
Example:
auto str = "ウェブサイト";
auto wstr = appender!wstring();
put(wstr, str.byCodeUnit);
writeln(wstr.data);
This outputs:
ã¦ã§ããµã¤ã
The fix is to detect this unique situation and decode the data into dchars.
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