completions: fix mixed tab/spaces indentation (spf13#1473)

These templates use 4 spaces for indentation, but some lines
used tabs.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

bash_completions.go

@@ -238,13 +238,13 @@ __%[1]s_handle_reply()
     fi
 
     if [[ ${#COMPREPLY[@]} -eq 0 ]]; then
-		if declare -F __%[1]s_custom_func >/dev/null; then
-			# try command name qualified custom func
-			__%[1]s_custom_func
-		else
-			# otherwise fall back to unqualified for compatibility
-			declare -F __custom_func >/dev/null && __custom_func
-		fi
+        if declare -F __%[1]s_custom_func >/dev/null; then
+            # try command name qualified custom func
+            __%[1]s_custom_func
+        else
+            # otherwise fall back to unqualified for compatibility
+            declare -F __custom_func >/dev/null && __custom_func
+        fi
     fi
 
     # available in bash-completion >= 2, not always present on macOS
@@ -309,7 +309,7 @@ __%[1]s_handle_flag()
 
     # skip the argument to a two word flag
     if [[ ${words[c]} != *"="* ]] && __%[1]s_contains_word "${words[c]}" "${two_word_flags[@]}"; then
-			  __%[1]s_debug "${FUNCNAME[0]}: found a flag ${words[c]}, skip the next argument"
+        __%[1]s_debug "${FUNCNAME[0]}: found a flag ${words[c]}, skip the next argument"
         c=$((c+1))
         # if we are looking for a flags value, don't show commands
         if [[ $c -eq $cword ]]; then

powershell_completions.go

@@ -50,15 +50,15 @@ Register-ArgumentCompleter -CommandName '%[1]s' -ScriptBlock {
     if ($Command.Length -gt $CursorPosition) {
         $Command=$Command.Substring(0,$CursorPosition)
     }
-	__%[1]s_debug "Truncated command: $Command"
+    __%[1]s_debug "Truncated command: $Command"
 
     $ShellCompDirectiveError=%[3]d
     $ShellCompDirectiveNoSpace=%[4]d
     $ShellCompDirectiveNoFileComp=%[5]d
     $ShellCompDirectiveFilterFileExt=%[6]d
     $ShellCompDirectiveFilterDirs=%[7]d
 
-	# Prepare the command to request completions for the program.
+    # Prepare the command to request completions for the program.
     # Split the command at the first space to separate the program and arguments.
     $Program,$Arguments = $Command.Split(" ",2)
     $RequestComp="$Program %[2]s $Arguments"

zsh_completions.go

@@ -250,7 +250,7 @@ _%[1]s()
 
 # don't run the completion function when being source-ed or eval-ed
 if [ "$funcstack[1]" = "_%[1]s" ]; then
-	_%[1]s
+    _%[1]s
 fi
 `, name, compCmd,
 		ShellCompDirectiveError, ShellCompDirectiveNoSpace, ShellCompDirectiveNoFileComp,