add support for `/` escape pattern

src/bbansi.nim

@@ -27,7 +27,7 @@ proc bb*(s: string): string =
       if noColor:
         inc i
         continue
-      if pattern == "reset":
+      if pattern in ["reset","/"]:
         result.add bbReset
         addReset = false
       else:
@@ -51,4 +51,4 @@ when isMainModule:
   echo bb"[bold red]bold red"
   echo bb"[bold red]bold red[reset] no more red" 
   echo bb"[unknown]this text is red no?"
-  echo bb"\[red] <- not a pattern [[red] <- also not a pattern"
+  echo bb"\[red] <- not a pattern "

tests/tbasic.nim

@@ -14,5 +14,8 @@ test "basic":
   check "Unknown Style" == bb"[unknown]Unknown Style"
   check "\e[1m\e[31mBold Red Text\e[0m" == bb"[bold red]Bold Red Text"
   check "\e[1m\e[31mBold Red Text\e[0mPlain Text" == bb"[bold red]Bold Red Text[reset]Plain Text"
+  check "\e[1mBold\e[0m Not Bold" == bb"[bold]Bold[/] Not Bold"
   # not sure how rich handles this
-  check "[red] ignored pattern" == bb"[[red] ignored pattern"
+  
+test "escaped":
+  check "[red] ignored pattern" == bb"\[red] ignored pattern"