diff --git a/completion/available/go.completion.bash b/completion/available/go.completion.bash
index e922cb5e..d3e5147e 100644
--- a/completion/available/go.completion.bash
+++ b/completion/available/go.completion.bash
@@ -1,281 +1,13 @@
-#!/usr/bin/env bash
+#!/usr/bin/bash
 
 # bash completion for go tool
-# https://github.com/thomasf/go-bash-completion
+# https://github.com/posener/complete
+# https://pkg.go.dev/github.com/posener/complete?tab=doc
 
-# install in /etc/bash_completion.d/ or your personal directory
+# Install gocomplete:
+# go get -u github.com/posener/complete/gocomplete
+# gocomplete -install
 
-complete -f -X '!*.8' 8l
-complete -f -X '!*.6' 6l
-complete -f -X '!*.5' 5l
-complete -f -X '!*.go' 8g 6g 5g gofmt gccgo
-
-_go_clear_cache() {
-  unset _go_imports
-}
-_go_importpath_cache() {
-   if [ -z "$_go_imports" ]; then
-    _go_imports=$(go list all 2>/dev/null)
-    export _go_imports
-  fi
-}
-
-_go_importpath()
-{
-  echo "$(compgen -W "$_go_imports" -- "$1")"
-}
-
-_go()
-{
-  # TODO: Only allow flags before other arguments. run already does
-  # this.
-
-  local cur=`_get_cword`
-  local prev="${COMP_WORDS[COMP_CWORD-1]}"
-
-  local cmd="${COMP_WORDS[1]}"
-
-  local cmds="build clean doc env fix fmt get
-    install list run test tool version vet"
-  local addhelp="gopath importpath remote
-    testflag testfunc"
-  local other="help"
-  local env_vars="GOARCH GOBIN GOEXE GOHOSTARCH GOHOSTOS GOOS GOPATH GORACE
-    GOROOT GOTOOLDIR GO15VENDOREXPERIMENT CC GOGCCFLAGS CXX CGO_ENABLED"
-
-  if [ "$COMP_CWORD" == 1 ]; then
-    for opt in $cmds; do
-      if [[ "$opt" == "$cmd" ]]; then
-        COMPREPLY=("$opt")
-        return
-      fi
-    done
-  fi
-
-  case "$cmd" in
-    'build')
-      case "$prev" in
-        '-o')
-          _filedir
-          ;;
-        '-p')
-          ;;
-        *)
-          if [[ "$cur" == -* ]]; then
-            COMPREPLY=($(compgen -W "-a -n -o -p -v -x" -- "$cur"))
-          else
-            local found=0
-            for ((i=0; i < ${#COMP_WORDS[@]}; i++)); do
-              case "$i" in
-                0|1|"$COMP_CWORD")
-                  continue
-                  ;;
-              esac
-              local opt="${COMP_WORDS[i]}"
-              if [[ "$opt" != -* ]]; then
-                if [[ "$opt" == *.go && -f "$opt" ]]; then
-                  found=1
-                  break
-                else
-                  found=2
-                  break
-                fi
-              fi
-            done
-            case "$found" in
-              0)
-                _filedir go
-                _go_importpath_cache
-                COMPREPLY+=(`_go_importpath "$cur"`)
-                ;;
-              1)
-                _filedir go
-                ;;
-              2)
-                _go_importpath_cache
-                COMPREPLY=(`_go_importpath "$cur"`)
-                ;;
-            esac
-          fi
-          ;;
-      esac
-      ;;
-    'clean')
-      if [[ "$cur" == -* ]]; then
-        COMPREPLY=($(compgen -W "-i -r -n -x" -- "$cur"))
-      else
-        _go_importpath_cache
-        COMPREPLY=(`_go_importpath "$cur"`)
-      fi
-      ;;
-    'doc')
-      _go_importpath_cache
-      COMPREPLY=(`_go_importpath "$cur"`)
-      ;;
-    'env')
-      COMPREPLY=($(compgen -W "$env_vars" -- "$cur"))
-      ;;
-    'fix')
-      _go_importpath_cache
-      COMPREPLY=(`_go_importpath "$cur"`)
-      ;;
-    'fmt')
-      _go_importpath_cache
-      COMPREPLY=(`_go_importpath "$cur"`)
-      ;;
-    'get')
-      case "$prev" in
-        '-p')
-          ;;
-        *)
-          if [[ "$cur" == -* ]]; then
-            COMPREPLY=($(compgen -W "-a -d -fix -n -p -u -v -x" -- "$cur"))
-          else
-            _go_importpath_cache
-            COMPREPLY=(`_go_importpath "$cur"`)
-          fi
-          ;;
-      esac
-      ;;
-    'install')
-      case "$prev" in
-        '-p')
-          ;;
-        *)
-          if [[ "$cur" == -* ]]; then
-            COMPREPLY=($(compgen -W "-a -n -p -v -x" -- "$cur"))
-          else
-            _go_importpath_cache
-            COMPREPLY=(`_go_importpath "$cur"`)
-          fi
-          ;;
-      esac
-      ;;
-    'list')
-      case "$prev" in
-        '-f')
-          ;;
-        *)
-          if [[ "$cur" == -* ]]; then
-            COMPREPLY=($(compgen -W "-e -f -json" -- "$cur"))
-          else
-            _go_importpath_cache
-            COMPREPLY=(`_go_importpath "$cur"`)
-          fi
-          ;;
-      esac
-      ;;
-    'run')
-      if [[ "$cur" == -* && "$prev" != *.go ]]; then
-        COMPREPLY=($(compgen -W "-a -n -x" -- "$cur"))
-      else
-        _filedir
-      fi
-      ;;
-    'test') # TODO: Support for testflags.
-      case "$prev" in
-        '-file')
-          _filedir go
-          ;;
-        '-p')
-          ;;
-        *)
-          if [[ "$cur" == -* ]]; then
-            COMPREPLY=($(compgen -W "-c -file -i -p -x" -- "$cur"))
-          else
-            _go_importpath_cache
-            COMPREPLY=(`_go_importpath "$cur"`)
-          fi
-          ;;
-        esac
-      ;;
-    'tool')
-      if [ "$COMP_CWORD" == 2 ]; then
-        COMPREPLY=($(compgen -W "$(go tool)" -- "$cur"))
-      else
-        case "${COMP_WORDS[2]}" in
-          [568]a) # TODO: Implement something.
-            #_go_tool_568a
-            ;;
-          [568]c) # TODO: Implement something.
-            #_go_tool_568c
-            ;;
-          [568]g) # TODO: Implement something.
-            #_go_tool_568g
-            ;;
-          [568]l) # TODO: Implement something.
-            #_go_tool_568l
-            ;;
-          'api') # TODO: Implement something.
-            #_go_tool_api
-            ;;
-          'cgo') # TODO: Implement something.
-            #_go_tool_cgo
-            ;;
-          'cov') # TODO: Implement something.
-            #_go_tool_cov
-            ;;
-          'dist') # TODO: Implement something.
-            #_go_tool_dist
-            ;;
-          'ebnflint') # TODO: Implement something.
-            #_go_tool_ebnflint
-            ;;
-          'fix') # TODO: Implement something.
-            #_go_tool_fix
-            ;;
-          'gotype') # TODO: Implement something.
-            #_go_tool_gotype
-            ;;
-          'nm') # TODO: Implement something.
-            #_go_tool_nm
-            ;;
-          'pack') # TODO: Implement something.
-            #_go_tool_pack
-            ;;
-          'pprof') # TODO: Implement something.
-            #_go_tool_pprof
-            ;;
-          'prof') # TODO: Implement something.
-            #_go_tool_prof
-            ;;
-          'vet') # TODO: Implement something.
-            #_go_tool_vet
-            ;;
-          'yacc') # TODO: Implement something.
-            #_go_tool_yacc
-            ;;
-        esac
-        if [[ "$cur" == -* ]]; then
-          COMPREPLY=($(compgen -W "${COMPREPLY[*]} -h" -- "$cur"))
-        fi
-      fi
-      ;;
-    'version')
-      ;;
-    'vet')
-      if [[ "$cur" == -* ]]; then
-        :
-      else
-        _go_importpath_cache
-        COMPREPLY=(`_go_importpath "$cur"`)
-      fi
-      ;;
-    'help')
-      if [ "$COMP_CWORD" == 2 ]; then
-        COMPREPLY=($(compgen -W "$cmds $addhelp" -- "$cur"))
-      fi
-      ;;
-    *)
-      if [ "$COMP_CWORD" == 1 ]; then
-        COMPREPLY=($(compgen -W "$cmds $other" -- "$cur"))
-      else
-        _filedir
-      fi
-      ;;
-  esac
-}
-
-complete $filenames -F _go go
-
-# vim:ts=2 sw=2 et syn=sh
+if _command_exists gocomplete && _command_exists go ; then
+  complete -C ${GOBIN}/gocomplete go
+fi