[tex-live] Making texts externally replaceable in PDFs, e.g. with sed(1)

Ulrike Fischer news3 at nililand.de
Sat Dec 15 00:31:52 CET 2018

Am Fri, 14 Dec 2018 22:56:18 +0100 schrieb Osipov, Michael:

>> I don't understand this. Where is the difference between
>> <0008002700320026002c00270008> and (%DOCID%)? Both is a quite unique
>> string.
> At first sight, yes, but I don't expect the char code to glyph mapping 
> to be stable as long as more and more glyphs are added to bfchar. 

Hm. Yes. But it shouldn't be so difficult to create a rather unique
pattern. E.g. with four %%%%.

> I noticed that too, one would need to update the stream length and the 
> xref table. It is feasable to make the placeholder as long as the actual 
> content.
> Thank your for the idea, but do you know how to enforce the main font 
> here while retaining WinAnsiEncoding?

You could create a tfm and a type1 font from you font.

Beside this: you could also store your text in a xform object
instead of directly in the stream. With a suitable attribut it
should be easy to find the object and replace the content.  

Ulrike Fischer 

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