Module stack 

A bash call stack, as an instrument records it — both halves.

stack.bash ships bash’s five parallel arrays as they are; Columns puts them back together. What comes out is a Stack: the frames one instrument reported, innermost first, never empty.

Structs

Args

BASH_ARGC and BASH_ARGV, as one instrument reported them.

Columns

One frame walk, in the sections stack.bash writes.

Frame

One frame: what it is, where its code came from, which line it is executing, and what it was called with.

Stack

A walk, innermost first. Never empty: the frame it was taken in is always one of them, and a walk that reaches no frame is refused where it is read.

Enums

Site

What a frame is, as FUNCNAME names it. Two of bash’s words are not function names, and a script that defines a function called main or source is indistinguishable from them — bash reports the same word.

Source

Where a frame’s code came from, as BASH_SOURCE names it. Two of bash’s words are not paths at all.

Functions

with_walk

The frame walk, and a tool’s own bash after it — the order the shells source them in.