nginx: Support semicolons in values

[rgm3]

I would like to use augtool to parse an nginx.conf file that contains:

add_header X-XSS-Protection "1; mode=block" always;

Unfortunately, I have not as yet been able to appropriately modify the nginx.aug lens to redefine the statement terminator as "semicolons at the end of the line that are not within double quotes."

[lutter]

Have a look at PR #567 - that should do what you want. Please let me know if that works for you.

I am not familiar with Nginx syntax - if there are other kinds of directives that need this treatment, please let me know, too.

[rgm3]

Not sure if it counts as "this kind of treatment" but the "location" directive supports an internal key word that does not currently parse, so I have excluded it from my configuration. I can open a separate ticket for that or we can re-word this ticket to "nginx improvements".

location /foo {
  root /var/www/html;
  internal;  # only valid in location blocks
}

Related to the internal keyword, the single-word break; directive is valid in server, context, and if blocks, although it's perhaps good enough to simply support any single-word directive from a whitelist anywhere in the tree as a first step.

[lutter]

I've changed the PR so that the lens now accepts simple directives like 'internal'; there's no whitelist for such entries though, it'll accept 'joey;' just the same as a directive.