DOS ain't dead

I implemented most of what I want from a viewer for the interrupt list, in a perl program known as intlist.pl. Some basic file reading and the search functionality were lifted from TracList, also a perl program that I wrote.

The manual is available online at https://pushbx.org/ecm/doc/intlist.htm

IntList expects to operate on single-file lists, ie INTERRUP.LST rather than INTERRUP.A, INTERRUP.B, and friends. Files are specified on the command line with the --file switch. A --multi switch enables searching through multiple specified files.

IntList features two single-pane modes (summary lines only) and two dual-pane modes (summary lines up top, a single entry's contents at the bottom). Using the Enter key you drill down into a more detailed view, while Esc or Space returns to a less detailed view.

Hyperlinks in an entry are marked with reverse video formatting. From the most detailed view (detail view focus mode), Tab and Backtick cycle through visible hyperlinks, and Enter loads the entry referenced by a marked hyperlink.

The -l command line switch and L command allow to enter a hyperlink, either in the same format as recognised within entries or a short form like "21.52" instead of "INT 21/AH=52h".

Whenever a hyperlink is loaded, a link history entry is added to an array, allowing to go "Back" using the B command. After running one or multiple B commands, you may go "Forwards" using the F command. (Any remaining forwards entries are discarded upon selecting a hyperlink.)

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IntList gained an entry on my website and was moved into its own repo now: https://hg.pushbx.org/ecm/intlist/

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