Added two modules for ASCII characters and a simple editing form (ESR)
diff --git a/Lib/curses/ascii.py b/Lib/curses/ascii.py
new file mode 100644
index 0000000..b53c91c
--- /dev/null
+++ b/Lib/curses/ascii.py
@@ -0,0 +1,102 @@
+#
+# ascii.py -- constants and memembership tests for ASCII characters
+#
+
+NUL = 0x00 # ^@
+SOH = 0x01 # ^A
+STX = 0x02 # ^B
+ETX = 0x03 # ^C
+EOT = 0x04 # ^D
+ENQ = 0x05 # ^E
+ACK = 0x06 # ^F
+BEL = 0x07 # ^G
+BS = 0x08 # ^H
+TAB = 0x09 # ^I
+HT = 0x09 # ^I
+LF = 0x0a # ^J
+NL = 0x0a # ^J
+VT = 0x0b # ^K
+FF = 0x0c # ^L
+CR = 0x0d # ^M
+SO = 0x0e # ^N
+SI = 0x0f # ^O
+DLE = 0x10 # ^P
+DC1 = 0x11 # ^Q
+DC2 = 0x12 # ^R
+DC3 = 0x13 # ^S
+DC4 = 0x14 # ^T
+NAK = 0x15 # ^U
+SYN = 0x16 # ^V
+ETB = 0x17 # ^W
+CAN = 0x18 # ^X
+EM = 0x19 # ^Y
+SUB = 0x1a # ^Z
+ESC = 0x1b # ^[
+FS = 0x1c # ^\
+GS = 0x1d # ^]
+RS = 0x1e # ^^
+US = 0x1f # ^_
+SP = 0x20 # space
+DEL = 0x7f # delete
+
+controlnames = [
+"NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL",
+"BS", "HT", "LF", "VT", "FF", "CR", "SO", "SI",
+"DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB",
+"CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "US",
+"SP"
+]
+
+def _ctoi(c):
+ if type(c) == type(""):
+ return ord(c)
+ else:
+ return c
+
+def isalnum(c): return isalpha(c) or isdigit(c)
+def isalpha(c): return isupper(c) or islower(c)
+def isascii(c): return _ctoi(c) <= 127 # ?
+def isblank(c): return _ctoi(c) in (8,32)
+def iscntrl(c): return _ctoi(c) <= 31
+def isdigit(c): return _ctoi(c) >= 48 and _ctoi(c) <= 57
+def isgraph(c): return _ctoi(c) >= 33 and _ctoi(c) <= 126
+def islower(c): return _ctoi(c) >= 97 and _ctoi(c) <= 122
+def isprint(c): return _ctoi(c) >= 32 and _ctoi(c) <= 126
+def ispunct(c): return _ctoi(c) != 32 and not isalnum(c)
+def isspace(c): return _ctoi(c) in (12, 10, 13, 9, 11)
+def isupper(c): return _ctoi(c) >= 65 and _ctoi(c) <= 90
+def isxdigit(c): return isdigit(c) or \
+ (_ctoi(c) >= 65 and _ctoi(c) <= 70) or (_ctoi(c) >= 97 and _ctoi(c) <= 102)
+def isctrl(c): return _ctoi(c) < 32
+def ismeta(c): return _ctoi(c) > 127
+
+def ascii(c):
+ if type(c) == type(""):
+ return chr(_ctoi(c) & 0x7f)
+ else:
+ return _ctoi(c) & 0x7f
+
+def ctrl(c):
+ if type(c) == type(""):
+ return chr(_ctoi(c) & 0x1f)
+ else:
+ return _ctoi(c) & 0x1f
+
+def alt(c):
+ if type(c) == type(""):
+ return chr(_ctoi(c) | 0x80)
+ else:
+ return _ctoi(c) | 0x80
+
+def unctrl(c):
+ bits = _ctoi(c)
+ if bits == 0x7f:
+ rep = "^?"
+ elif bits & 0x20:
+ rep = chr((bits & 0x7f) | 0x20)
+ else:
+ rep = "^" + chr(((bits & 0x7f) | 0x20) + 0x20)
+ if bits & 0x80:
+ return "!" + rep
+ return rep
+