ANSI/VT escape codes not forwarded correctly

[LinqLover]

Windows 11 24H2, Python 3.13, running in Windows Terminal from PowerShell, pywinpty version 2.0.14

In the REPL, run:

from winpty import PtyProcess
p = PtyProcess.spawn(['python3', '-c', 'print("\033[94mHi\033[0m")'])
while not p.eof(): print(p.readline())
    print("done")

Expected output (color annotations mine):

Hi   (blue)

done   (default color)

Actual output (color annotations mine):

Hi   (blue)


done    (blue)

Workaround:

p = PtyProcess.spawn(['python3', '-c', 'print("\033[94mHi\033[0m ")'])

Note the trailing space after the last VT code, which ensures that the escape sequence is actually applied.