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gh-110392: Fix tty functions (GH-110642)

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* tty.setraw() and tty.setcbreak() previously returned partially modified
  list of the original tty attributes. Now they return the correct list of
  the original tty attributes

* tty.cfmakeraw() and tty.cfmakecbreak() now make a copy of the list of
  special characters before modifying it.
This commit is contained in:
Serhiy Storchaka 2023-10-14 08:50:41 +03:00 • committed by GitHub
parent 7284e0ef84
commit 84e2096fbd
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3 changed files with 12 additions and 2 deletions
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Lib/tty.py
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@ -39,6 +39,7 @@ def cfmakeraw(mode):
# Case B: MIN>0, TIME=0
# A pending read shall block until MIN (here 1) bytes are received,
# or a signal is received.
mode[CC] = list(mode[CC])
mode[CC][VMIN] = 1
mode[CC][VTIME] = 0
@ -54,6 +55,7 @@ def cfmakecbreak(mode):
# Case B: MIN>0, TIME=0
# A pending read shall block until MIN (here 1) bytes are received,
# or a signal is received.
mode[CC] = list(mode[CC])
mode[CC][VMIN] = 1
mode[CC][VTIME] = 0