On Tue, Jun 14, 2016 at 11:00:38PM +0200, Lukas Fleischer wrote:
> Improve the readability of recv_sideband() significantly by replacing
> fragile buffer manipulations with string buffers and more sophisticated
> format strings. Note that each line is printed using a single write()
> syscall to avoid garbled output when multiple processes write to stderr
> in parallel, see 9ac13ec (atomic write for sideband remote messages,
> 2006-10-11) for details.
>
> Also, reorganize the overall control flow, remove some superfluous
> variables and replace a custom implementation of strpbrk() with a call
> to the standard C library function.
I happened to be looking at the color-printing code yesterday, and was
reminded that on Windows, fprintf is responsible for converting ANSI
codes into colors the terminal can show:
$ git grep -A2 IMPORTANT color.h
color.h: * IMPORTANT: Due to the way these color codes are emulated on Windows,
color.h- * write them only using printf(), fprintf(), and fputs(). In particular,
color.h- * do not use puts() or write().
Your patch converts some fprintf calls to write. What does this mean
on Windows for:
1. Remote servers which send ANSI codes and expect them to look
reasonable (this might be a losing proposition already, as the
server won't know anything about the user's terminal, or whether
output is going to a file).
2. The use of ANSI_SUFFIX in this function, which uses a similar
escape code.
-Peff
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