fix: remove non-dedicated header modification

lua/hexer/parser.lua

@@ -31,7 +31,6 @@ function M.parse_input(input)
     if #input == 1 then return { M._parse_from_int(input:byte(1)) } end
 
     local head, tail = 1, input:len()
-    if input:sub(1, 1) == '0' then head = head + 2 end
     local orig_head = head
 
 
@@ -110,7 +109,7 @@ function M._itob(input)
     return result
 end
 
----Checks if the string has the given number format header and returns the start of the value if it does, otherwise 0
+---Checks if the string has the given number format header and returns the start of the value if it does, otherwise 1
 ---@param str string
 ---@param header string[] the list of single-character format specifiers
 ---@return integer
@@ -126,7 +125,7 @@ function M._check_header(str, header)
         end
     end
 
-    return 0
+    return 1
 end
 
 ---Create a HexerChar from a given integer

lua/hexer/tests/parser_spec.lua

@@ -32,8 +32,8 @@ describe("Parser", function()
 
         val_pos = Parser._check_header(strs[1], headers[2])
 
-        assert(val_pos == 0,
-            ("String %s with headers %s expected pos %s but got %s"):format(strs[1], vim.inspect(headers[2]), 0, val_pos)
+        assert(val_pos == 1,
+            ("String %s with headers %s expected pos %s but got %s"):format(strs[1], vim.inspect(headers[2]), 1, val_pos)
         )
 
         val_pos = Parser._check_header(strs[2], headers[1])
@@ -44,8 +44,8 @@ describe("Parser", function()
 
         val_pos = Parser._check_header(strs[2], headers[2])
 
-        assert(val_pos == 0,
-            ("String %s with headers %s expected pos %s but got %s"):format(strs[2], vim.inspect(headers[2]), 0, val_pos)
+        assert(val_pos == 1,
+            ("String %s with headers %s expected pos %s but got %s"):format(strs[2], vim.inspect(headers[2]), 1, val_pos)
         )
     end)