[Bash-autocompletion] Fixed a bug on bash

[yamaguchi]

Summary

Maybe I mismerged when merging previous commits by hand.

[ruiu]

LGTM

cfe/trunk/utils/bash-autocomplete.sh

_clang()
   # initialize variables by setting manualy.
   _init_completion -n 2> /dev/null
   if [[ "$?" != 0 ]]; then
     COMPREPLY=()
     cword=$COMP_CWORD
     cur="${COMP_WORDS[$cword]}"
   fi
 
-  # bash always separates '=' as a token even if there's no space before/after '='.
-  # On the other hand, '=' is just a regular character for clang options that
-  # contain '='. For example, "-stdlib=" is defined as is, instead of "-stdlib" and "=".
-  # So, we need to partially undo bash tokenization here for integrity.
   w1="${COMP_WORDS[$cword - 1]}"
   if [[ $cword > 1 ]]; then
     w2="${COMP_WORDS[$cword - 2]}"
+  fi
+
   # Clang want to know if -cc1 or -Xclang option is specified or not, because we don't want to show
   # cc1 options otherwise.
   if [[ "${COMP_WORDS[1]}" == "-cc1" || "$w1" == "-Xclang" ]]; then
     arg="#"
   fi
+
+  # bash always separates '=' as a token even if there's no space before/after '='.
+  # On the other hand, '=' is just a regular character for clang options that
+  # contain '='. For example, "-stdlib=" is defined as is, instead of "-stdlib" and "=".
+  # So, we need to partially undo bash tokenization here for integrity.
   if [[ "$cur" == -* ]]; then
     # -foo<tab>
     arg="$arg$cur"
   elif [[ "$w1" == -*  && "$cur" == '=' ]]; then
     # -foo=<tab>
     arg="$arg$w1=,"
   elif [[ "$cur" == -*= ]]; then
     # -foo=<tab>