Re: Printing TITLE, SUBTITLE, and KEYWORDS

[Hans Lonsdale]

> ----------------------------------------
> From: Greg Wooledge <greg@wooledge.org>
> Date: Feb 5, 2023, 3:23:37 AM
> To: <help-bash@gnu.org>
> Subject: Re: Printing TITLE, SUBTITLE, and KEYWORDS
> 
> 
> On Sat, Feb 04, 2023 at 04:05:13AM +0100, Hans Lonsdale wrote:
> > > > >     pn_ere='^[[:space:]]*([#;!]+|@c|//)[[:space:]]+'
> > > 
> > > That does not AT ALL match the sample inputs you have been providing.
> > > That's the main problem here.  You're working with inputs that only
> > > you can see.
> > 
> > This is used to allow indentations in comments 
> 
> It does a HELL of a lot more than that.  Did someone else write that
> regex for you?  Do you even understand it?

I did write it and understand it.  It allows spaces before the comments and 
spaces after.
Comments would be composed of ## or !! or @c or // for possibility of different 
languages.

 
> But OK, now we have ACTUAL CONFIRMATION that your needs are MORE COMPLEX
> than your EXAMPLES have shown.
> 
> Your comments (which MAY OR MAY NOT be introduced by ##) may be
> "indented", and apparently your indentation may be tabs, or spaces, or
> a mix.
> 
> That means you really do NEED a regex.  String comparisons won't work.
> 
> So, you need to "escape" the strings that you are injecting into your
> regex.  I showed one way of doing that, in a previous message.  I may
> have missed some special characters.  Be on the lookout for that.
> 
> Escape your strings, inject them into the regex, and then use the regex
> in your awk or sed program to do your parsing.
> 
> All of the tools you need have been provided already.
 


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