[pypy-dev] pyrepl: cursor blinks
Armin Rigo
arigo at tunes.org
Sat Jun 28 20:20:10 CEST 2008
Hi all,
When I'm running an interactive pypy-c over an ssh connection I notice
that the cursor blinks a bit when I type (it can remain invisible for a
fraction of second). Normal readline-style editing doesn't give this
result even over laggy connections. I traced it to
pypy/lib/pyrepl/unix_console.py lines 95 and 97, which are the control
code for hiding and re-showing the cursor, called all the time when
refreshing the display.
I really don't like this, but of course it is not a concern for people
whose terminal's cursor is blinking all the time anyway.
Anyway, if I remove these control codes, I get quite a fine experience
again. However, I'm sure this is highly dependent on the terminal and I
fear that some terminals might display the cursor moving quickly around
while refreshing is taking place. If anyone knows of a better solution
to avoid both issues, please do tell :-) Otherwise, if you feel like
it, could you please try the attached patch in your favourite terminal?
No need to re-translate a pypy-c. Tell me what your experience is,
running an interactive pypy-c over an ssh connection (preferably laggy).
A bientot,
Armin.
-------------- next part --------------
Index: unix_console.py
===================================================================
--- unix_console.py (revision 56155)
+++ unix_console.py (working copy)
@@ -92,9 +92,9 @@
self.term = term
self._bel = _my_getstr("bel")
- self._civis = _my_getstr("civis", optional=1)
+ self._civis = None # _my_getstr("civis", optional=1)
self._clear = _my_getstr("clear")
- self._cnorm = _my_getstr("cnorm", optional=1)
+ self._cnorm = None # _my_getstr("cnorm", optional=1)
self._cub = _my_getstr("cub", optional=1)
self._cub1 = _my_getstr("cub1", 1)
self._cud = _my_getstr("cud", 1)
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