Re: make_ctags: use -I option to ignore pg_node_attr macro

>> The patch drops support for "-n" option :-<
>> 
>> Attached is the patch by fixing make_ctags (make_etags is not
>> touched).
>> 
>> If Exuberant-type ctags is available, use it (not changed).
>>   If Exuberant-type ctags is not available, try old ctags (not changed).
>>     If the old ctags does not support "-e" option, try etags (new).
> 
> I am not sure if this is good way to check if ctags supports "-e" or not. 
> 
> +    then    ctags --version 2>&1 | grep -- -e >/dev/null
> 
> Perhaps, "--help" might be intended rather than "--version" to check
> supported options?

Yeah, that was my mistake.

>  Even so, ctags would have other option whose name contains
> "-e" than Emacs support, so this check could end in a wrong result.  Therefore,
> it seems to me that it is better to check immediately if etags is available 
> in case that we don't have Exuberant-type ctags.

That makes sense.

Best reagards,
--
Tatsuo Ishii
SRA OSS LLC
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