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Re: [PATCH v2] Refactor recv_sideband()

From
Johannes Schindelin <johannes.schindelin@gmx.de>
Date
Jun 24, 2016, 17:45 UTC
Message-ID
<alpine.DEB.2.20.1606241942220.12947@virtualbox>
In-Reply-To
<20160624153121.GA2494@sigill.intra.peff.net>
Hi Peff,
On Fri, 24 Jun 2016, Jeff King wrote:
Show 16 quoted lines
> 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:
Thanks for remembering!
Show 15 quoted lines
>   $ 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.

Wow, I did not even think that a remote server would send color codes, what with the server being unable to query the local terminal via isatty().

Do we *actually* send color via the sideband, like, ever?

Ciao, Dscho

Previous: Jeff KingNext: Jeff King
Message 12 of 60 in “Refactor recv_sideband()”
  1. Refactor recv_sideband()Lukas Fleischer, Jun 13, 2016
  2. Nicolas PitreJun 13, 2016
  3. Johannes SchindelinJun 14, 2016
  4. Nicolas PitreJun 14, 2016
  5. Johannes SchindelinJun 14, 2016
  6. Nicolas PitreJun 14, 2016
  7. Refactor recv_sideband()Lukas Fleischer, Jun 14, 2016
  8. Lukas FleischerJun 14, 2016
  9. Junio C HamanoJun 14, 2016
  10. Jeff KingJun 15, 2016
  11. Jeff KingJun 24, 2016
  12. Johannes SchindelinJun 24, 2016
  13. Jeff KingJun 24, 2016
  14. Junio C HamanoJun 24, 2016
  15. Lukas FleischerJun 27, 2016
  16. Junio C HamanoJun 27, 2016
  17. Jeff KingJun 27, 2016
  18. Junio C HamanoJun 27, 2016
  19. Lukas FleischerJun 27, 2016
  20. Nicolas PitreJun 27, 2016
  21. Lukas FleischerJun 28, 2016
  22. Junio C HamanoJun 28, 2016
  23. Johannes SchindelinJun 28, 2016
  24. Johannes SchindelinJun 28, 2016
  25. Junio C HamanoJun 28, 2016
  26. Johannes SchindelinJun 28, 2016
  27. Dennis KaarsemakerJun 24, 2016
  28. Refactor recv_sideband()Lukas Fleischer, Jun 22, 2016
  29. Nicolas PitreJun 22, 2016
  30. Nicolas PitreJun 22, 2016
  31. Lukas FleischerJun 23, 2016
  32. Nicolas PitreJun 23, 2016
  33. Refactor recv_sideband()Lukas Fleischer, Jun 28, 2016
  34. Junio C HamanoJun 28, 2016
  35. Junio C HamanoJun 28, 2016
  36. Nicolas PitreJun 28, 2016
  37. Junio C HamanoJun 28, 2016
  38. Nicolas PitreJun 28, 2016
  39. Junio C HamanoJun 28, 2016
  40. Nicolas PitreJun 28, 2016
  41. Junio C HamanoJun 28, 2016
  42. Nicolas PitreJun 28, 2016
  43. Junio C HamanoJun 28, 2016
  44. Junio C HamanoJun 28, 2016
  45. Junio C HamanoJun 29, 2016
  46. Nicolas PitreJun 29, 2016
  47. Nicolas PitreJun 29, 2016
  48. Junio C HamanoJun 29, 2016
  49. Lukas FleischerJun 30, 2016
  50. Junio C HamanoJul 1, 2016
  51. Nicolas PitreJul 5, 2016
  52. Junio C HamanoJul 6, 2016
  53. Nicolas PitreJul 7, 2016
  54. Nicolas PitreJun 14, 2016
  55. Nicolas PitreJun 14, 2016
  56. Junio C HamanoJun 14, 2016
  57. Lukas FleischerJun 14, 2016
  58. Junio C HamanoJun 14, 2016
  59. Nicolas PitreJun 14, 2016
  60. Lukas FleischerJun 19, 2016

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