🍒 [lldb] improve the heuristics for checking if a terminal supports Unicode#12014
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adrian-prantl merged 3 commits intoswiftlang:swift/release/6.3from Dec 17, 2025
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NFC patch which moves `DiagnosticsRendering` from `Utility` to `Host`. This refactoring is needed for llvm#168603. It adds a method to check whether the current terminal supports Unicode or not. This will be OS dependent and a better fit for `Host`. Since `Utility` cannot depend on `Host`, `DiagnosticsRendering` must live in `Host` instead. (cherry picked from commit 0c7d826)
…code (llvm#171832) This patch improves the way lldb checks if the terminal it's opened in (if any) supports Unicode or not. On POSIX systems, we check if `LANG` contains `UTF-8`. On Windows, we always return `true` since we use the `WriteToConsoleW` api. This is a relanding of llvm#168603. The tests failed because the bots support Unicode but the tests expect ASCII. To avoid different outputs depending on the environment the tests are running in, this patch always force ASCII in the tests. (cherry picked from commit 7345233)
…72038) This patch fixes a test failure introduced by llvm#171832 due to a check which was not properly updated. (cherry picked from commit 8515dda)
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adrian-prantl
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