Fix empty string and GoRun -F main module (#147)

* fix: append check if val is nil
Add check to see if value is empty. And don't add to path if already in
path.

Signed-off-by: Davincible <david.brouwer.99@gmail.com>

* feat: auto run main module in floating term
Add check to see if floating term, to auto run main file

Signed-off-by: Davincible <david.brouwer.99@gmail.com>

* Update asyncmake.lua

no need to show a notification as there is another one once the program is finished.

Co-authored-by: rayx <rayx.cn@gmail.com>

lua/go.lua

@@ -170,7 +170,9 @@ function go.setup(cfg)
   vim.cmd(
     [[command! -nargs=*  -complete=custom,v:lua.package.loaded.go.modify_tags_complete GoModifyTag lua require("go.tags").modify(<f-args>)]]
   )
-  vim.cmd([[command! -nargs=*  -complete=custom,v:lua.package.loaded.go.add_tags_complete  GoAddTag lua require("go.tags").add(<f-args>)]])
+  vim.cmd(
+    [[command! -nargs=*  -complete=custom,v:lua.package.loaded.go.add_tags_complete  GoAddTag lua require("go.tags").add(<f-args>)]]
+  )
   vim.cmd([[command! -nargs=* GoRmTag lua require("go.tags").rm(<f-args>)]])
   vim.cmd(
     [[command! -nargs=* -complete=custom,v:lua.package.loaded.go.impl_complete GoImpl  lua require("go.impl").run(<f-args>)]]
@@ -256,7 +258,6 @@ function go.setup(cfg)
   if _GO_NVIM_CFG.textobjects then
     require("go.ts.textobjects").setup()
   end
-  -- TODO remove in future
   gobin = vfn.getenv("GOBIN")
   if gobin == vim.NIL then
     return
@@ -312,15 +313,14 @@ go.modify_tags_complete = function(_, _, _)
   return table.concat(opts, "\n")
 end
 
-
 -- how to deal complete https://github.com/vim-scripts/marvim/blob/c159856871aa18fa4f3249c6aa312c52f586d1ef/plugin/marvim.vim#L259
 
 -- go.add_tags_complete = function(arglead, line, pos)
 go.add_tags_complete = function(arglead, line, _)
   -- print("lead: ",arglead, "L", line, "p" )
-  local transf = { "camelcase", "snakecase", "lispcase", 'pascalcase', "titlecase", 'keep' }
+  local transf = { "camelcase", "snakecase", "lispcase", "pascalcase", "titlecase", "keep" }
   local ret = {}
-  if #vim.split(line, '%s+') >= 2 then
+  if #vim.split(line, "%s+") >= 2 then
     if vim.startswith("-transform", arglead) then
       return "-transform"
     end
@@ -332,11 +332,13 @@ go.add_tags_complete = function(arglead, line, _)
     if #ret > 0 then
       return table.concat(ret, "\n")
     end
-    return table.concat(transf, '\n')
+    return table.concat(transf, "\n")
   end
 
   local opts = {
-    "json", "json.yml", "-transform",
+    "json",
+    "json.yml",
+    "-transform",
   }
   return table.concat(opts, "\n")
 end

lua/go/asyncmake.lua

@@ -118,7 +118,7 @@ function M.make(...)
   end
   if makeprg:find("go run") then
     runner = "go run"
-    if args == nil or #args == 0 then
+    if args == nil or #args == 0 or (#args == 1 and args[1] == "-F") then
       makeprg = makeprg .. " ."
     end
     efm = efm .. [[,%A%\\t%#%f:%l\ +0x%[0-9A-Fa-f]%\\+]]

lua/go/env.lua

@@ -16,6 +16,9 @@ end
 
 function M.append(env, val)
   local oldval = vfn.getenv(env)
+  if val == vim.NIL or string.find(oldval, val) then
+    return
+  end
   local newval = oldval .. ":" .. val
   vfn.setenv(env, newval)
 end