3 files changed, 4 insertions, 31 deletions
diff --git a/src/render/rendertext.nim b/src/render/rendertext.nim
index 675c4ddb..a43a50c5 100644
--- a/src/render/rendertext.nim
+++ b/src/render/rendertext.nim
@@ -35,7 +35,7 @@ proc renderPlainText*(text: string): FlexibleGrid =
     of '\e':
       i = format.parseAnsiCode(text, i)
       af = true
-    elif text[i].isControlChar():
+    elif text[i] in Controls:
       add_format
       result[^1].str &= '^' & text[i].getControlLetter()
     else:
@@ -92,7 +92,7 @@ proc renderStream*(grid: var FlexibleGrid, renderer: var StreamRenderer, len: in
         renderer.spaces = 0
     of '\e':
       renderer.ansiparser.reset()
-    elif c.isControlChar():
+    elif c in Controls:
       add_format
       grid[^1].str &= '^' & c.getControlLetter()
     else:
diff --git a/src/types/url.nim b/src/types/url.nim
index 1476a566..da27d96b 100644
--- a/src/types/url.nim
+++ b/src/types/url.nim
@@ -287,7 +287,7 @@ func domainToAscii*(domain: string, bestrict = false): Option[string] =
       return none(string)
     return result
   else:
-    return domain.toAsciiLower().some
+    return domain.tolower().some
 
 func parseHost(input: string, isnotspecial = false): Option[Host] =
   if input.len == 0: return
diff --git a/src/utils/twtstr.nim b/src/utils/twtstr.nim
index 3d33f8d1..0bce4591 100644
--- a/src/utils/twtstr.nim
+++ b/src/utils/twtstr.nim
@@ -46,9 +46,6 @@ func onlyWhitespace*(s: string): bool =
       return false
   return true
 
-func isControlChar*(c: char): bool =
-  return c in Controls
-
 func isControlChar*(r: Rune): bool =
   case r
   of Rune(0x00)..Rune(0x1F): return true
@@ -82,25 +79,6 @@ const controlLetterMap = genControlLetterMap()
 func getControlLetter*(c: char): char =
   return controlLetterMap[int(c)]
 
-func findChar*(str: string, c: char, start: int = 0): int =
-  var i = start
-  while i < str.len:
-    if str[i] == c:
-      return i
-    inc i
-  return -1
-
-func findChar*(str: string, c: Rune, start: int = 0): int =
-  var i = start
-  var n = i
-  while i < str.runeLen():
-    var r: Rune
-    fastRuneAt(str, n, r)
-    if r == c:
-      return i
-    i = n
-  return -1
-
 const lowerChars = (func(): array[char, char] =
   for i in 0..255:
     if char(i) in 'A'..'Z':
@@ -112,11 +90,6 @@ const lowerChars = (func(): array[char, char] =
 func tolower*(c: char): char =
   return lowerChars[c]
 
-func toAsciiLower*(str: string): string =
-  result = newString(str.len)
-  for i in 0..str.high:
-    result[i] = str[i].tolower()
-
 func toHeaderCase*(str: string): string =
   result = str
   var flip = true
@@ -828,7 +801,7 @@ var width_table*: array[0..0x10FFFF, byte]
 
 func makewidthtable*(cjk: bool): array[0..0x10FFFF, byte] {.noInit.} =
   for r in low(char)..high(char):
-    if r.isControlChar():
+    if r in Controls:
       result[int(r)] = 0
     else:
       result[int(r)] = 1