Backspace in a line's leading blanks goes back to the previous indent stop

helix's delete_char_backward dedents: when everything before the cursor on its
line is blank, it deletes back to the previous multiple of the indent width,
a whole unit when already on one (a tab before the cursor still goes alone).
pardes deleted one space, so O<backspace> under an indented line left three
of four, which is where helix-golf's function_into_class ended up.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 3 insertions, 3 deletions

diff --git a/docs/helix-keys.md b/docs/helix-keys.md
index 23d63454..8023ba6e 100644
--- a/docs/helix-keys.md
+++ b/docs/helix-keys.md
@@ -129,7 +129,7 @@ language-backend queries, and the shell pipe.
 | `n` / `N` (any pane) | MOTION, not a jump: move the SELECTION to the next / previous look-able text and open NOTHING. Enter — the look chord — on what it leaves selected is what opens it | KEEP, do not touch; not in the corpus (helix's `n`/`N` walk regex search hits). What a step selects is the pane's GRAIN (`output_pane.Grain`, read in `Pardes.lookSpanIn`): in FREE TEXT — a terminal, a file, a PDF, a prose answer buffer — the largest whitespace-delimited run `look.resolve` can act on (`look.lookableSpan`, wrapper punctuation peeled off both ends), several to a line; in a RESULTS BUFFER one stop per ROW, the largest run its head resolves as (`look.lookableLineSpan`), because a row there IS one location and the words after it are the match rather than a second place to go; in a COMMAND list the whole line. The walk is a RING across PANES: every pane that has performed a Look, most recent first (`Pardes.look_src`), then the output buffers that have not, newest first, and only when both are empty the active pane. Exhausting a pane enters the next at its first (forward) / last (backward) span and the end wraps to the start, so `N` is the exact inverse of `n`. What it lands on becomes an EXPLICIT `vsel` with the cursor on its FIRST column, in the pane the walk focuses. ONE motion in every pane kind and every buffer kind — a PDF steps the `+Search` buffer its own search filled, `n` to select the row and Enter to jump. The single thing a buffer may change is that grain, and it changes it by BEING a kind of buffer rather than by a branch: `output_pane.Traits.steps` (a list of locations) makes a step take one row at a time, and `Traits.commands` makes it take the WHOLE LINE, because a command list (`ThemeSel`/`FontSel`) holds words to run and there is no path inside `Theme gruvbox` to pick out. Tab on what `n` selected wears the theme, which is the same middle click on the row is. `]d`/`[d` are helix's diagnostic motions, a different binding, and they do still jump to each diagnostic (`docs/lsp.md`) | pardes-specific |
 | insert: printable text | file: real edit; terminal: typed run splice | | helix-verified (file) |
 | insert: `Enter` | newline; keeps the current full indent levels and adds one 4-space logical tab when the text before the cursor ends in `(`, `[`, `{`, or `)` (including `})`) | plain lines match `insert_newline`; delimiter heuristic is pardes-specific | helix-verified (plain) / pardes-specific (delimiter) |
-| insert: `Backspace` (+ `Shift-Backspace`) | delete prev char, joins lines at col 0 | matches `delete_char_backward`; `Ctrl-h` alias in B | helix-verified |
+| insert: `Backspace` (+ `Shift-Backspace`) | delete prev char, joins lines at col 0; in a line's leading blanks, back to the previous 4-column indent stop (a whole unit when on one; a tab still goes alone) | matches `delete_char_backward` and its dedent; `Ctrl-h` alias in B | helix-verified |
 | insert: `Up` `Down` `Left` `Right` | move cursor | matches helix's "not recommended" insert arrows | helix-verified |
 | `gd` `gD` `gy` `gi` `gr` | LSP definition / declaration / type-definition / implementation / references. ONE answer jumps straight there; several fill `+Search`, where n/N walk and Enter opens | in-process ZLS (`src/lsp/lsp_zls.zig`), `.zig` only — on a file the backend does not speak these do nothing at all, with no error row. Ctrl+left-click is the mouse spelling of `gd` | out of corpus |
 | `]d` `[d` / `]D` `[D` | step the diagnostics list / go to its last or first; if no list is up, asking the backend for one is part of the press | | out of corpus |
@@ -397,11 +397,11 @@ Files (all in `test/hxcases/`):
   `sel-regex-dot-newline` (mvzr is not the Rust regex crate: no
   multi-line `^`/`$`, and `.` matches a newline).
 - `parity.jsonl` — 80 further cases, used only by the parity gate below.
-- `parity-waivers.jsonl` — 13 named exemptions for the parity gate, in three
+- `parity-waivers.jsonl` — 14 named exemptions for the parity gate, in three
   classes: one deliberate pardes binding (`ctrl-b-page`, since `Ctrl-b` IS the
   tty toggle), eight pty VIEWPORT divergences (a terminal's view cannot scroll
   below the vt's live grid bottom, so the cursor snaps into a different
-  scrolloff band — no text differs), and four case texts a pty cannot hold
+  scrolloff band — no text differs), and five case texts a pty cannot hold
   verbatim (a literal TAB the emulator expands, a file with no trailing
   newline, an all-whitespace last row the dump trims).
 - `golf.jsonl` + `golf-goldens.jsonl` — every example on helix-golf