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The documentation had gone stale in the ordinary way -- claims that were true
when they were written and that nothing since had been obliged to re-read.
Some of them were load-bearing.
THE TUTOR. It still said there is no multi-cursor, that NextColor cycles three
themes, and that its practice blocks "are also run as unit tests (generated
from this file by tutor_gen)" -- a tool that appears nowhere in the tree, and
nothing anywhere parses a `# keys:` block. Left alone, that claim is what
makes the next wrong block survive.
Three of those blocks WERE wrong, and all three for one reason: since the
helix motion model landed, w/e/f/t SELECT the range they cross, so `i` after
one inserts at the SELECTION'S START. `w i Z esc` on "foo bar" gives
"Zfoo bar", not the "foo Zbar" the file promised. They were written against a
vim reading of the same keys. Every block in the file has now been run through
`zig build hxdiff` against the real core and matches byte for byte, and the
trap itself is written down in 3.3 rather than left to be rediscovered.
The tutor gains a PART 4 for everything added since it was written -- PDF
panes, the in-process ZLS backend, themes and fonts, the startup file -- and
PART 3 gains counts (and which keys ignore one), f/F/t/T, the whole g table
(bare `G` is a no-op; `ge` is the START of the last line), multiple cursors
and the s/S regex pair, `m`, `]`/`[`, `|`, insert mode, and all fifty leader
paths.
THE REST. design.typ's line table claimed 7,626 lines against a real 38,048,
and its rows did not sum to its own total; its Event/Effect boundary contract
-- the part a shell author writes against -- named four variants that do not
exist and omitted fourteen that do. lsp.md's probe count. config.md's
theme-name rules, which as written could not reach a zed theme at all.
helix-keys.md's Skipped section, holding five families that have since landed.
macos.md's menu bar, undocumented, along with sixteen other claims. web.md on
what the browser build can actually do.
SOURCE COMMENTS that had rotted alongside them: `tag_normal` is a space, not
the `•` its own comment describes; Wrap is ON by default, not off; a FontSel
row is SELECTED by n and RUN by Tab, not run by n; the SPC paths in lsp.zig
lost their `l` group prefix when the language group moved; and the
differential suites are 481 and 561 cases, not 360 and 440.
TWO THINGS FOUND BY DOCUMENTING THEM, both left standing and written down
rather than papered over. Typing `[^\n]` at an s/S prompt panics: the live
preview compiles every prefix, and `[^\` indexes an empty slice in mvzr's
parseCharSet. Both the tutor and a waiver recommended that pattern as the
workaround for `.` matching a newline; they now say what it costs and what
would make it sayable. And `Exec` is a builtin, so an `Exec` line in the
startup config types that command into a shell before the first frame -- the
tutor said nothing in that file is ever sent to one.
Nine adversarial reviews over two rounds, each with the hxdiff harness to
execute what it doubted. The second round exists because the first round's
fixes needed checking too, and it caught three regressions of my own -- one of
them a probe count I had "corrected" away from the truth.
Verified: unit-test, snap 87/87, hxdiff 481/0, hxparity 561/0, mupdf-check.
docs/design.pdf regenerated. The tutor's first seventeen lines are byte-
identical, which is what tutor.golden pins.
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Three changes that all turned out to be the same shape -- a feature that
worked in one direction, or for one pane kind, and quietly did not in the
others.
CLIPBOARD. Every register write emitted set_clipboard, so deleting one
character threw away whatever the desktop was holding; multi-cursor yank took
the join's early return and emitted nothing at all, so the same key reached
the clipboard on one cursor and not on two. Nothing could READ the clipboard:
the SDL shell had no SDL_GetClipboardText anywhere in it, and the tty shell
never asked for OSC 52, so `p` from another application was dead in both.
Now it is helix's split. y/d/c/p/P/R and the acme chords are the DEFAULT
REGISTER and nothing else; the system clipboard is five words on helix's own
letters -- SPC y, SPC Y, SPC p, SPC P, SPC R -- spelled as builtins so they
land in Help and are executable like every other verb. The one exception is
the tag `y` chord, which still mirrors out because a tag is always insert, so
SPC cannot be pressed there, and copying the path out is the whole point of
the chord.
Reading is a new read_clipboard effect answered by an ordinary Event.paste, so
the round trip is honest about being one: SDL and NSPasteboard answer inside
the same drain, the browser answers a promise, and a terminal answers over
OSC 52 or -- far more often -- refuses. A refused read is a paste that does
not happen, and the request dies at the next keystroke rather than landing
minutes late in whatever pane is focused by then.
The tty shell also enables BRACKETED PASTE now and coalesces
paste_start..paste_end into one event. Before this a paste arrived as a flood
of individual key presses: plausible in insert mode, and in normal mode every
pasted character ran as a command.
n/N. They stepped the armed results buffer and immediately Looked each row, so
you could not walk past a hit without opening it. They are a MOTION now:
select the next look-able text, open nothing, and let Enter decide. What they
step is the largest whitespace-delimited run look.resolve can act on
(look.lookableSpan, wrapper punctuation peeled), over a RING of panes -- every
pane that has performed a look, most recent first, then the output buffers
that have not, newest first, and only if both are empty the pane in front of
you. N is the exact inverse of n, computed rather than remembered: both
directions ask the same question about the same spans and compare against the
column the walk parks on, so x presses one way and x back land exactly where
you started, pane boundaries and the ring's seam included.
A ring rather than a list with two ends because a shell's cursor sits at the
prompt, below everything it has printed, so a walk that could not come round
would have nowhere to go on the very first press -- which is the case n/N were
written for.
One motion everywhere, no pane-kind or buffer-kind special case. The only
thing a buffer may change is the GRAIN of what a step selects, and it does it
with one flag rather than a branch: output_pane.Traits.commands (renamed from
`executes`, which named one reader's behaviour rather than the fact) makes a
row select WHOLE, because a ThemeSel line is a word to run and has no path
inside it to pick out. `]d`/`[d` are not n/N -- they are helix's diagnostic
motions, their job is to ARRIVE, and they still reach searchStep.
THE TTY PROMPT. Leaving raw tty blanked the prompt row, and the command you
had typed at that prompt shares the row, so it went too -- a shell out of tty
read as output only. OSC 133 marks the row CELL by cell, so the two are
separable: config.tty_blank = .prompt cuts the prompt's own columns and leaves
the command, left-hugged at column 0 in line with the output under it rather
than in a bay of blanks. .prompt_and_input is the old behaviour, kept.
Because the row is now something you can put a cursor in, enterTty adds the
hidden prompt width back before asking ghostty to walk the shell's own cursor
to it -- the modal column on a cut row is short by exactly that much.
Verified: unit-test 186/186 (nine new), snap 87/87 (new ttyprompt.snap),
hxdiff 481 and hxparity 561 with 0 mismatches, tty and gui both build. And
against the real binaries rather than the harness: in a pty, SPC y emits OSC
52 carrying exactly the selection while plain y emits nothing, SPC p issues
the read and pastes the reply, and a bracketed paste of "dd..." inserts text
instead of deleting two lines. In a real SDL window, SPC y then SPC p round
trips through the system clipboard while the default register holds different
text. Setting tty_blank back to .prompt_and_input reproduces all 86 old
goldens byte for byte.
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