The width tier, title-border arithmetic, ON/OFF/DEFAULT badge, cursor cell
and table row are currently hand-copied across the three draw functions.
This adds them once, with the two geometry identities derived rather than
hand-maintained: a row's chrome is a fixed 21 columns, so field_w is
iw - 21 - label_w (reproducing both iw-33 and iw-34), and a title border is
dashes = iw - visible(segment) - 1 (reproducing all three of iw-23,
iw-len-3 and iw-L-S-22).
The frame owns no page height. Every verb prints exactly one line or
fragment, so the fixed-16 category and value pages and the dynamic
7+n sub-category page keep their heights, and config-settings.fish's
erase is unaffected.
No caller yet, so rendering cannot move: the golden's existing page
section is byte-identical (verified with cmp -n over its previous size)
and the file only gains frame-verb cases appended after it.
The three config-settings draw functions are hand-tuned layout code whose
field widths, dash counts and pad targets are arithmetic on the width tier.
Any refactor of them has to be byte-identical, and nothing until now could
prove that.
Renders all 356 page/width/scope/cursor-row combinations -- every page at
COLUMNS 100/88/84/70, both scopes, cursor on every row, plus the inline
editor -- and byte-compares against a committed baseline.
The golden holds raw output: set_color escapes and box drawing exactly as
emitted, plus the wrap-aware \e[<N>A\e[J erase config-settings.fish would
emit for each panel, and per case the declared panel height against the
measured line count. Nothing is normalized; the gate is cmp(1) and a
one-space change anywhere fails it. Proven by four deliberate mutations,
one per draw function plus a panel-height change, each caught and reverted.
Runs entirely inside a throwaway HOME/XDG_CONFIG_HOME sandbox: the fixtures
must be real universal variables, and this repo doubles as a live
~/.config/fish. fish --no-config cannot be used, as -N silently degrades
set -U to global scope. Every utility is called through `command`, since
the config itself shadows rm, cat and mkdir and aliases cp -i.
rootiest