Wsrtjtyk

I have used file.create and file.append successfully to aggregate multiple .txt files. When I try it with .rtf files, however, I get a larger rtf file that only shows the contents of the first .rtf of many to be aggregated.

So I have 5 .rtf files, for example. dirFiles is the list of names to be aggregated:

file.create(fileCollection_r)             

file.append(fileCollection_r,dirFiles_r)    

Is this a bug, and I would I report it?
How can I aggregate multiple .rtf files?

First of all, it is not clear what file.create() resp. append is doing. You didn't tag for a specific programming language, so that part of your question is really unclear and you need to improve that.

Having said that: RTF files, are in the end, pure text files. They contain formatting information, such as

{rtf1ansiansicpg1252cocoartf1671cocoasubrtf100

{fonttblf0fswissfcharset0 Helvetica;}

{colortbl;red255green255blue255;}

{*expandedcolortbl;;}

So, theoretically, you can just pull that text content from multiple RTF files, and put all of that into a single file.

Thus: simple use a file viewer, such as less, cat, or some windows/macos pendant, and A) check the textual content of your single RTF files and B) check out the textual content of the file that you created this way. That will tell you if the pure textual append did work.

But beyond that: it could very well be that the RTF format itself has certain limitations, that simply make it not possible to just append arbitrary RTF file content and end up with something that works as a correct RTF document.