Hello Juergen, In the interest of making Gnu APL as compatible as practical with IBM APL2, please consider the following:
The IBM APL2 quad quote prompt replacement facility supports the prompt being a nested array. I make that claim based on the APL code for the parts inventory demo presented on page 100 of the IBM 'APL2 Programming: Guide'. Please examine the 'menu' and 'input' functions. The prompt created by the 'menu' function is a nested array. The Gnu APL quad quote prompt replacement facility only performs replacement on primitive character arrays and leaves nested arrays unchanged. I make that assertion based on the attached 'TEST.apl' which was created by lifting the first 5 lines (including header) of the 'input' function from the parts inventory demo above and adding code to exercise the function. If you run 'TEST.apl' and type 'FILL' (without the quotes) at the two prompts, you should see CHOOSE PLACE FILL OR STOCK : FILL CHOOSE PLACE FILL OR STOCK : FILL CHOOSE PLACE FILL OR STOCK : FILL FILL The first two lines result from using a prompt generated with nested array; the second two lines from a simple character array. Regards, Fred
TEST.apl
Description: Binary data
