Add support for nerdfont based bar_format symbols

Signed-off-by: Gabriel Mazetto <[email protected]>

Author: brodock

README.md

@@ -571,6 +571,7 @@ There are number of preconfigured bar formats you can choose from.
 | `:diamond` | `♦♦♦♦♦♢♢♢♢♢` | `♢♦♢`         |
 | `:dot`     | `･･････････` | `･･･`         |
 | `:heart`   | `♥♥♥♥♥♡♡♡♡♡` | `♡♥♡`         |
+| `:nerdfont`| ``| ``         |
 | `:rectangle` | `▮▮▮▮▮▯▯▯▯▯` | `▯▮▯`       |
 | `:square`  | `▪▪▪▪▪▫▫▫▫▫` | `▫▪▫`         |
 | `:star`    | `★★★★★☆☆☆☆☆` | `☆★☆`         |

lib/tty/progressbar/formats.rb

@@ -79,6 +79,11 @@ module Formats
           incomplete: "♡",
           unknown: "♡♥♡"
         },
+        nerdfont: { # 
+          complete: "",
+          incomplete: "",
+          unknown: ""
+        },
         rectangle: { # ▮▮▮▮▮▯▯▯▯▯
           complete: "▮",
           incomplete: "▯",

spec/unit/new_spec.rb

@@ -69,7 +69,7 @@
       "unsupported bar format: :unknown. Available formats are: " \
       ":arrow, :asterisk, :blade, :block, :box, :bracket, " \
       ":burger, :button, :chevron, :circle, :classic, :crate, :diamond, :dot, " \
-      ":heart, :rectangle, :square, :star, :track, :tread, :triangle, :wave"
+      ":heart, :nerdfont, :rectangle, :square, :star, :track, :tread, :triangle, :wave"
     )
   end