Provide a RenderSpan.Str method to get an SGR-escaped string

Author: japhb

META6.json

@@ -7,6 +7,7 @@
   ],
   "depends": [
     "Color::DirColors:auth<zef:japhb>:ver<0.0.3+>",
+    "Terminal::ANSIColor:ver<0.14+>:auth<zef:raku-community-modules>"
     "Terminal::Capabilities:auth<zef:japhb>:ver<0.0.14+>",
     "Terminal::LineEditor:auth<zef:japhb>:ver<0.0.23+>",
     "Terminal::Print:auth<zef:terminal-printers>:ver<0.977+>",

lib/Terminal/Widgets/TextContent.rakumod

@@ -3,6 +3,7 @@
 unit module Terminal::Widgets::TextContent;
 
 use Text::MiscUtils::Layout;
+use Terminal::ANSIColor;
 
 
 #| An exception preventing stringification for content that requires more processing
@@ -38,6 +39,12 @@ class RenderSpan is export {
     method width(--> UInt:D) {
         $!width //= duospace-width-core($!text)
     }
+
+    #| Stringify to an SGR-escaped string instead of rendering into a widget's
+    #| content area (use Widget.draw-line-spans for that)
+    method Str(--> Str:D) {
+        colored($!text, $!color)
+    }
 }