# HG changeset patch
# User Denis Laxalde <denis.laxalde@logilab.fr>
# Date 1573055674 -3600
# Node ID be0f77fd274dfeaf47a2104b178039894532c425
# Parent  7cc913396f8cdcf65d756f9022b437e608ebbae9
py3: fix handling of ctrl keys in crecord (issue6213)

The "keypressed" value in handlekeypressed() is a key name obtained by
curses's getkey(); this can be a multibyte string for special keys
like CTRL keys. Calling curses.unctrl() with such a value fails on
Python 3 with a TypeError as described in issue6213. (On Python 2, this
does not crash, but I'm not sure the result is correct, though it does
no matter here.)

So instead of calling unctrl(), we compare "keypressed" with the
expected "^L" obtained by curses.ascii.ctrl("L").

diff -r 7cc913396f8c -r be0f77fd274d mercurial/crecord.py
--- a/mercurial/crecord.py	Wed Nov 06 16:53:01 2019 +0100
+++ b/mercurial/crecord.py	Wed Nov 06 16:54:34 2019 +0100
@@ -59,6 +59,7 @@
 
 try:
     import curses
+    import curses.ascii
 
     curses.error
 except ImportError:
@@ -1938,7 +1939,7 @@
             self.helpwindow()
             self.stdscr.clear()
             self.stdscr.refresh()
-        elif curses.unctrl(keypressed) in ["^L"]:
+        elif keypressed in [curses.ascii.ctrl("L")]:
             # scroll the current line to the top of the screen, and redraw
             # everything
             self.scrolllines(self.selecteditemstartline)