simplify and rename the init function

eatit.lua

@@ -37,6 +37,22 @@ local function logwrite(string)
   end
 end
 
+local function openlog()
+  if opts.logging.log then -- log if asked to
+    -- get our logfile's full path
+    fn = mp.command_native({'expand-path', opts.logging.logfile})
+
+    f = io.open(fn, 'a') -- open file buffer
+    io.output(f) -- set it as default
+  end
+end
+
+local function closelog()
+  if opts.logging.log then
+    io.close(f)
+  end
+end
+
 -- get the requested git repos
 local function clonegit(i)
     logwrite('downloading ' .. plugins[i][1])
@@ -127,15 +143,8 @@ local function startinstall()
   end
 end
 
-local function init()
-  if opts.logging.log then -- log if asked to
-    -- get our logfile's full path
-    local fn = mp.command_native({'expand-path', opts.logging.logfile})
-
-    os.remove(fn) -- remove logfile so that we start fresh
-    f = io.open(fn, 'a') -- open file buffer
-    io.output(f) -- set it as default
-  end
+local function initupdate()
+  openlog()
 
   logwrite('# of plugins defined in table: ' .. tablelength(plugins))
   os.execute('mkdir -p ' .. opts.dl.dir) -- make download dir
@@ -146,9 +155,9 @@ local function init()
     logwrite('powerwashing the tmp dir (' .. opts.dl.dir .. ')')
     os.execute('rm -rf ' .. opts.dl.dir)
   end
-  if opts.logging.log then
-    io.close(f)
+
+  closelog()
   end
 end
 
-mp.add_key_binding('U', 'UpdatePlugins', init)
+mp.add_key_binding('U', 'UpdatePlugins', initupdate)