./src/_compilation/add in elonmusk-1.0.82 vs ./src/_compilation/add in elonmusk-1.0.87

@@ -1,14 +1,27 @@
 #!/usr/bin/crystal
 
-def delete(arg)
-	`find -name #{arg}`.each_line do |i|
-		File.delete(i)
-	end
+CORE_UTIL_STRING = "core_utils"
+
+def prepend_each(arg)
+  STDIN.each_line do |line|
+    puts arg + line
+  end
 end
 
+def append_each(arg)
+  STDIN.each_line do |line|
+    puts line + arg
+  end
+end
 
+def delete(arg)
+  `find -name #{arg}`.each_line do |i|
+    File.delete(i)
+  end
+end
+
 def nth_word(arg)
   i = arg.to_u64 - 1
   STDIN.each_line do |line|
     puts line.split[i] rescue ""
   end
@@ -18,15 +31,15 @@
   STDIN.each_line do |line|
     puts line.strip
   end
 end
 
-def lines()
+def lines(folder = ".")
   if !STDIN.tty?
-    puts STDIN.gets_to_end.count("\n")
+    puts STDIN.gets_to_end.count('\n')
   else
-    res = `find .`.count("\n") - 1
+    res = `find #{folder}`.count('\n') - 1
     puts res
   end
 end
 
 def args(arg1)
@@ -153,29 +166,29 @@
 end
 
 def gsubip(arg1, arg2, arg3)
   regex = Regex.new(arg1)
   text = File.read(arg3).gsub(/#{arg1}/m, arg2)
-  File.open(t = File.tempname("coreutils", "_tmp"), "w", File.info(arg3).permissions) do |h|
+  File.open(t = File.tempname(CORE_UTIL_STRING, "_tmp"), "w", File.info(arg3).permissions) do |h|
     h.print text
   end
   begin
     File.rename t, arg3
   rescue
-    rm t
+    File.delete t
   end
 end
 
 def rip(arg1, arg2, arg3)
   text = File.read(arg3).gsub(arg1, arg2)
-  File.open(t = File.tempname("coreutils", "_tmp"), "w", File.info(arg3).permissions) do |h|
+  File.open(t = File.tempname(CORE_UTIL_STRING, "_tmp"), "w", File.info(arg3).permissions) do |h|
     h.print text
   end
   begin
     File.rename t, arg3
   rescue
-    rm t
+    File.delete t
   end
 end
 
 def gsub(arg1, arg2)
   print STDIN.gets_to_end.gsub(/#{arg1}/m, arg2)
@@ -195,41 +208,41 @@
 
 def swap(file1, file2)
   [file1, file2].each do |f|
     File.exists?(f) || abort("No file named #{f.dump}")
   end
-  t = File.tempname("coreutils", "_tmp")
+  t = File.tempname(CORE_UTIL_STRING, "_tmp")
 
   File.rename file1, t
   File.rename file2, file1
   File.rename t, file2
 end
 
 def prepend(file)
   file_data = File.read(file)
   new_data = STDIN.gets_to_end
-  File.open(t = File.tempname("coreutils", "_tmp"), "w", File.info(file).permissions) do |h|
+  File.open(t = File.tempname(CORE_UTIL_STRING, "_tmp"), "w", File.info(file).permissions) do |h|
     h << new_data + file_data
   end
 
   begin
     File.rename t, file
   rescue
-    rm t
+    File.delete t
   end
 end
 
 def append(file)
   file_data = File.read(file)
   new_data = STDIN.gets_to_end
-  File.open(t = File.tempname("coreutils", "_tmp"), "w", File.info(file).permissions) do |h|
+  File.open(t = File.tempname(CORE_UTIL_STRING, "_tmp"), "w", File.info(file).permissions) do |h|
     h << file_data + new_data
   end
   begin
     File.rename t, file
   rescue
-    rm t
+    File.delete t
   end
 end
 
 class Funcs
   def self.argument_data(program, usage, long_desc)
@@ -256,16 +269,22 @@
     puts text
   end
 end
 
 
-def main()
-  if ARGV.size != 0
+def main
+  size = ARGV.size
+  
+  if size > 0
     Funcs.argument_data("add", "[add] [arguments]", "See the sub example\n\nadd adds integers from the standard input\n\n(echo 1; echo 2; echo 3) | add\n\nThe result would be 6")
     exit 1
   end
 
-  add
+  begin
+  	add
+  rescue e : Exception
+  	puts e
+  end
 end
 
 
 main