general: Add -a to support terminal transparency.

1 files changed, 7 insertions, 0 deletions

diff --git a/pywal/__main__.py b/pywal/__main__.py
index 0af4df6..566ff95 100644
--- a/pywal/__main__.py
+++ b/pywal/__main__.py
@@ -29,6 +29,10 @@ def get_args():
     description = "wal - Generate colorschemes on the fly"
     arg = argparse.ArgumentParser(description=description)
 
+    arg.add_argument("-a", metavar="\"alpha\"",
+                     help="Set terminal background transparency. \
+                           *Only works in URxvt*")
+
     arg.add_argument("-c", action="store_true",
                      help="Delete all cached colorschemes.")
 
@@ -86,6 +90,9 @@ def process_args(args):
     if args.r:
         reload.colors(args.t)
 
+    if args.a:
+        util.Color.alpha_num = args.a
+
     if args.i:
         image_file = image.get(args.i)
         colors_plain = colors.get(image_file, notify=not args.q)