./psql template1 -c "select n, repeat('x', n) as long_column_name from unnest(array[42,210]) as n" | pspg
And it seems that pspg handled the situation without any issue. Also I tried inserting newlines into the output, and pspg still performed without issue. Can you give an example of scenario which should break after changing the record header length?
I think so there can be two basic problems:
a) with line cursor
b) format detection - I try to detect the header line - and I expect this line has the most length of all lines. I use a line with the same length as the column's type info (data, border).
