> I need to have [snip] a stack data structure. Here's a very rudimentary implementation using strings -- items on the stack cannot contain spaces, and no error checking is performed, but you get the idea. If necessary, the macros can be generalized to accept the name of the stack string as argument (instead of it being hard-coded), so that multiple stacks can be handled simultaneously using the same macros.
.\" .\" ---------------------------------------------------------------- .de push .ds stack \\$1 \\*[stack] .. .de pop .pop1 \\$1 \\*[stack] .. .de pop1 .ds \\$1 \\$2 .shift 2 .ds stack \\$* .. .\" ---------------------------------------------------------------- .sp 2c .push foo pushed `foo', stack now contains `\*[stack]' .br .push xxx pushed `xxx', stack now contains `\*[stack]' .br .push hello pushed `hello', stack now contains `\*[stack]' .br .pop result popped `\*[result]', stack now contains `\*[stack]' .br .push world pushed `world', stack now contains `\*[stack]' .br .pop result popped `\*[result]', stack now contains `\*[stack]' .br .pop result popped `\*[result]', stack now contains `\*[stack]' .br .pop result popped `\*[result]', stack now contains `\*[stack]' .br
