Now I have to add something to the current behaviour. After the call to sub_func1 I have to modify the file by moving one line to another position in the file. And then sub_func2 is called and everything goes on as before. I think that this kills solution 1.
Hmmm, so what magical properties does opening a file have that allows you to move a single line to another position, that you don't seem to be able to do with an open file handle?

In reply to Re: Design/Style question about writing to a file from different functions by JavaFan
in thread Design/Style question about writing to a file from different functions by Dirk80

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