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On Unix-like operating systems stdio.h is usually line-buffered. As putStr uses fputs(3) from stdio.h internally, output will be written to standard out after a newline character is written to the buffer. Since the prompt does not contain a newline, it will only be written to standard output after the user presses return. I encountered this issue on Alpine Linux which uses musl libc (instead of glibc). However, I believe this issue is likely also reproducible with glibc. This commit fixes this issue by flushing standard output after writing the prompt to it. Surprisingly, `src/Idris/IDEMode/REPL.idr` already does this correctly, `src/Idris/REPL.idr` does not though.
5 lines
289 B
Plaintext
5 lines
289 B
Plaintext
1/1: Building array (array.idr)
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Main> [Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Just "Hello", Just "World", Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing]
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[Just 1, Just 2, Just 3, Just 4, Just 5]
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Main> Bye for now!
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