Add italic support

Author: Vosjedev

curtsies/fmtfuncs.py

@@ -22,6 +22,7 @@
 
 bold = _partial(fmtstr, style="bold")
 dark = _partial(fmtstr, style="dark")
+italic = _partial(fmtstr, style="italic")
 underline = _partial(fmtstr, style="underline")
 blink = _partial(fmtstr, style="blink")
 invert = _partial(fmtstr, style="invert")

curtsies/formatstring.py

@@ -59,6 +59,7 @@
 one_arg_xforms: Mapping[str, Callable[[str], str]] = {
     "bold": lambda s: seq(STYLES["bold"]) + s + seq(RESET_ALL),
     "dark": lambda s: seq(STYLES["dark"]) + s + seq(RESET_ALL),
+	 "italic": lambda s: seq(STYLES["italic"]) + s + seq(RESET_ALL),
     "underline": lambda s: seq(STYLES["underline"]) + s + seq(RESET_ALL),
     "blink": lambda s: seq(STYLES["blink"]) + s + seq(RESET_ALL),
     "invert": lambda s: seq(STYLES["invert"]) + s + seq(RESET_ALL),

curtsies/termformatconstants.py

@@ -6,7 +6,7 @@
 FG_COLORS: Mapping[str, int] = dict(zip(colors, range(30, 38)))
 BG_COLORS: Mapping[str, int] = dict(zip(colors, range(40, 48)))
 STYLES: Mapping[str, int] = dict(
-    zip(("bold", "dark", "underline", "blink", "invert"), (1, 2, 4, 5, 7))
+    zip(("bold", "dark", "italic", "underline", "blink", "invert"), (1, 2, 3, 4, 5, 7))
 )
 FG_NUMBER_TO_COLOR: Mapping[int, str] = dict(zip(FG_COLORS.values(), FG_COLORS.keys()))
 BG_NUMBER_TO_COLOR: Mapping[int, str] = dict(zip(BG_COLORS.values(), BG_COLORS.keys()))