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* osc 7501: say what you are doing in somebody else's protocoluser2026-10-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OSC 5577 only works for programs that know slosh exists. The program status protocol is the same idea written down for everybody, by ghostty's author and implemented by ghostty and Rex, so a program that already speaks it needs to know nothing about us: printf '\033]7501;state=working:app=cargo:msg=YnVpbGRpbmc=\033\\' Implemented *as well as* 5577, not instead of it. 5577 is a two-way control channel -- buttons answer on the program's stdin, shaders are refused with a reason -- and 7501 deliberately is not, so neither absorbs the other. What 7501 buys is the programs we do not control. The scanner becomes one pass for four things: 5577, 7501, OSC 133 ; A and RIS. The last two are here because 7501 ties record lifetime to them -- a new prompt or a full reset is how a stale `working` dies without a heartbeat -- and because a pane should pay for that scan once. osc5577_fn gives way to osc_scan_cbs_t. Reports are all-or-nothing, which is the spec's rule: no state, an unknown state, a broken limit, base64 that will not decode, a control character in decoded text or a malformed id discards the whole report rather than writing a partial one. A malformed *pair* is skipped and the rest parsed. A pane keeps up to PANE_PS_MAX records with LRU eviction, and composes the one line it has from them by precedence -- blocked, error, done, working, idle -- resolving `app` from the nearest ancestor that has one, the way the hierarchy is allowed to mean something. It lands in the slot 5577's `status` already had, because every reader of a pane wants "what is this doing", not "which protocol said so"; `panes` reports program_state, program_kind, program_app and progress beside it, with -1 for a progress nobody reported, since a bar drawn at 0% says something false. The feature-detection reply is rate-limited here. Note for the next re-vendor: upstream lib-vt implements 7501 too, newer than our pin, and answers the support query itself through write_pty without rate-limiting it. See "What upstream did" under D1 in DESIGN.md before swapping this half of the file for GHOSTTY_TERMINAL_OPT_PROGRAM_STATUS.
* tab bar: a sidebar that fits the terminal, and gives up the edge lastuser2026-10-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | `tab_bar_width` was a reservation: the configured columns came off the screen whatever the screen was, and the only fallback was all the way back to the top row. On a narrow terminal that is chrome displacing the thing it is chrome for, and the jump to the top moves every target you were aiming at. It is a ceiling now. app_tab_bar_cols takes the app, because the answer depends on the terminal and not only on the config: held to the columns left after a pane's collapse width, and to a third of the screen, and narrowed rather than dropped. TAB_BAR_FIT (14) is the narrowest width this code will invent on its own -- a config that asks for less is taken at its word -- and 0 means there is no room for a sidebar at all, which is the one case that still falls back on top. Height counts too, which it did not before: a sidebar spends a row per tab, so a wide but short terminal runs out of list before it runs out of screen, and a tab with no row is not clipped, it is unreachable. tab_bar_min_rows is that floor. Not when the top strip could not seat them either -- moving them would gain nothing, so the side you configured stands. All of it is re-derived per frame, like the layout, so a resize moves the bar and nothing remembers that it did. test_tab_bar also stops depending on where the suite is run from. An unnamed tab borrows the basename of its focused pane's cwd, so eight checks read `tests` under `make test` (which cds there) and `slosh` from the repository root, where they failed. They are about padding, alignment and the index, not about that derivation, so they name the tab first -- by id, since `set-name` takes 0 for the focused *pane* only. 147 checks, green from either directory.
* theme: the busy spinner is its own colour (tab_status_spinner)user2026-09-22
| | | | | | | | | | | | | It was drawn in tab_status_busy, the colour of the words it sits beside, which made one decision out of two. The words have to stay readable at a glance and a mark does not: a theme may well want the glyph loud and the text calm -- or the text in the accent and the mark a quiet dot -- and with one entry neither is available without moving both. Unset it follows tab_status_busy, derived after it and from whatever that resolved to, named or derived, so nothing changes for anyone who does not ask and no theme in contrib needs a line. `--dump-theme` writes both, like every other colour the compositor draws.
* sidebar: room for the spinner, by default (tab_bar_padding 0 1 0 2)user2026-09-22
| | | | | | | | | | | | | | | | | | | `│⠋bash: cd` -- the mark landed in the one column of left padding there was, so it ended up welded to the first letter of the status. The rule was "the mark takes a column the padding was already holding blank", which is right about not reflowing and wrong about there being enough of it. So the mark takes the *first* column of the indent and whatever is left over is the air after it, and the default indent is two columns instead of one. One column is still available -- `tab_bar_padding 0 1` -- and now means the squashed look on purpose rather than by default; three gives two spaces; zero still puts everything against the frame. Nothing reflows when a program starts or stops working, which was the point of taking a column that was already blank. The labels and the tab numbers move with it, because the indent is the strip's and not the status's -- a status still starts in the column its tab's name starts in, which is the rule the leading space existed for in the first place.
* osc 5577: `busy`, and a sidebar that shows it (busy_mark)user2026-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A status is a line of text, and a line of text cannot say whether it is still true. "building 3/7" reads exactly the same while it builds and ten minutes after it stopped, which is the one thing somebody reading it from another tab wants to know -- and the only workaround available to a program was to write the answer into the words and keep rewriting them. So `busy`: printf '\033]5577;1;status;make test\033\\' printf '\033]5577;1;busy;1\033\\' ... printf '\033]5577;1;busy;0\033\\' A flag of its own rather than a field of `status`, because a status is the *whole* payload after the verb -- `status;a;b;c` has always been the text "a;b;c" -- so anything added to that line would change what every existing sender means, including the five pi extensions D1 promises byte compatibility to. Orthogonal, so a program can leave one line up and toggle the other; anything but 0/false/no/off is on; `clear` takes both; and a pane whose program has gone is never busy, whatever it last claimed, because a spinner turning under a dead tab is a lie you keep looking at. In a sidebar the row turns `tab_status_busy` -- the theme's accent, derived like the other status colours, so no theme needs a line -- and takes a spinner in the column `tab_bar_padding` was already holding blank, so nothing reflows when a program starts or stops working. `busy_mark` is the frames, separated by spaces: one frame is a static mark and costs nothing, several make it turn, and only then does the session keep a frame clock -- via the same `animating` flag an animated shader uses, so the cost lands only while such a row is actually composed, and `""` drops the mark entirely and leaves the colour to say it. The frame is a pure function of the clock, like every other pulse here, so two clients attached to one session show the same one. `panes` now reports `status` and `busy`, which is the scriptable half of the same fact: what a pane says about itself, without reading its screen.
* sidebar: air inside it, the way panes have padding (tab_bar_padding)user2026-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | `padding` is a pane's: the ring between a frame and the text it holds, in rows times gap_aspect so a `1` looks square around a block of prose. Handing the same knob to the sidebar looked tempting and is wrong twice over. The sidebar is chrome, not a pane, and its width is fixed by tab_bar_width -- so `padding 1` would quietly eat four of a sixteen-column strip (two cells a side, aspect included) and shorten every tab name, because somebody wanted their terminal text to breathe. And its two axes are not one idea: the columns are an indent for labels, the rows are air above a list. So tab_bar_padding, its own knob in the family the rest of the sidebar's air already lives in (tab_bar_pad, tab_gap, newtab_pad), taking the same 1/2/4 CSS-order values as `padding` -- one reader for both, so they cannot drift into meaning different things -- but counted in cells. The default `0 1` is what the sidebar already drew: that one column is where every label's leading space has been hard-coded since the sidebar existed, and moving it into a setting is what makes `tab_bar_padding 0` possible at all -- names flush against the frame, which was not previously a thing anyone could ask for. The statuses, the `+ new tab` row and the pane count follow the same indent, since they were each carrying their own copy of that space. It is air *inside* the plate: a tab's fill still spans the whole row and the whole row is still the hit, because the row is what you click and a highlight that stopped short of the frame would read as a highlighted word rather than a chosen row. The bottom rows are given up when the strip is short of them, like every other piece of air in here. tab_bar_pad is the older name for the top component alone. It still works, still means exactly that, and wins where a config writes both -- it is the more specific of the two. The dump writes tab_bar_padding and mentions it.
* sidebar: align the numbers by defaultuser2026-09-22
| | | | | | | | | | | | | | | | | | | The knob landed defaulting to "prefix" on the grounds that it is what the strip has always drawn -- but the strip is not what this is about. A sidebar row is wider than the name on it, and `1:api` spends the first two or three cells of every row (three or four once you have ten tabs) on a number nobody reads until they reach for C-a 2, pushing the names in by a distance that depends on how many tabs are open. Right-aligned, the names start where the statuses under them start and the numbers make a column of their own. `tab_bar_index "prefix"` is still there and unchanged, and the top strip is unaffected either way -- it ignores the setting, having no far end to align against. The tests that used `1:` as the anchor for "where a tab's name starts" now anchor on the name, which is what they were about; two new ones cover the default and the prefix form explicitly, so neither mode is tested only by being the default.
* sidebar: the tab number at the far edge (tab_bar_index)user2026-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | `1:api` puts a number at the start of every row, and in a sidebar that is a column of digits in front of the thing you are actually reading -- the names start one, two or three cells in depending on how many tabs you have, and the numbers are only wanted at the moment you reach for C-a 2. tab_bar_index "right" moves them: │ tests 1 │ │ 1:tests │ │ verylongproj 2 │ vs │ 2:verylongproje│ │ api 3 │ │ 3:api │ Every name starts in the same column and the numbers line up in one of their own, which costs a column of sidebar and buys the list a shape. "prefix" stays the default, because it is what the strip has always drawn and the strip is where most people meet it. Sidebars only, and not by omission: a tab in the top strip is exactly as wide as its label, so there is no far end to align against and a number floating after a name it does not belong to would be worse than the prefix it replaced. The setting is ignored there rather than half-honoured. A row too narrow to spare the columns (under the number plus five) also keeps the prefix, since the name is the part you came for, and the rename editor keeps the whole cell as it always did. A name long enough to reach the number stops one cell short of it, because `verylongproje2` is a tab called verylongproje2 as far as any reader can tell. The cell comes back as padding, so the plate is unbroken and the hit is still the whole row -- clicking the number is clicking the tab, and the number brightens with the label under the pointer rather than leaving half a row lit. The bell mark keeps its place between them, budgeted first as before, so a long name cannot eat either of the two things that are not the name.
* themes: ask the binary where it is, not the prefix it was built foruser2026-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | `theme_name "sl0p"` with all seven themes sitting in /usr/share/slosh/themes: "no theme named sl0p". The lookup knew two places -- your own themes directory and the PREFIX this build was compiled with -- and on that machine the first did not exist and the second was /usr/local, because that is the Makefile's default and the package was built with PREFIX=/usr. Neither was where the themes actually were, and nothing in the search could ever have found them. A compiled-in prefix is a guess about where the binary will end up, and the binary is the one thing that knows where it really is. So the search now asks it: path_self() (/proc/self/exe, _NSGetExecutablePath, GetModuleFileName -- lifted out of server.c, which was already doing this for SLOSH_BIN) gives <bin>/../share/slosh/themes for an installed slosh wherever it was installed to, and <repo>/contrib/themes for one being run out of a build tree, which makes a checkout able to name a theme without installing anything first. The compiled-in prefix stays as the last candidate, for a binary sitting somewhere that says nothing about its data, and duplicates collapse so the usual install does not report the same directory twice. Your own directory is still first and still shadows everything, which is the property that matters; the rest is about the shipped set being findable at all. The tests that assumed a closed world of two temp themes now narrow to their own names by typing, since the shipped ones are (correctly) always in the list -- and the "no themes anywhere" toast lost its test, because with the shipped set reachable that state takes a binary with nothing beside it. The case that started this is a test of its own.
* theme: a name and a directory, not sixty colours in your configuser2026-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Wearing a theme meant pasting its `theme { }` block into config.kdl, or including a path to a file you had copied there yourself. Both make the palette a literal in your config, and a literal is the one thing you cannot change cheaply: not from a script, not from a running session, not by a list of what is available, and never again from upstream -- the colours you pasted are the colours that theme had the day you pasted them. So a theme is a file in a directory now, and a config names it: theme_name "phosphor" theme { frame_focus "#00ff88" } // ...but that one colour is mine theme_name is applied after the includes and before everything the file says itself, which is the rule includes already follow and for the same reason: the loader reads a document by asking it for names rather than walking it in order, so "here" is not a position it could honour, and "what you asked for is the base, what you wrote is yours" is the rule worth having. Two directories, yours first: `themes/` beside the root config -- beside the file that was loaded, so a config somewhere else (SLOSH_CONFIG, or one handed to --check) takes its themes with it -- and then <prefix>/share/slosh/themes, compiled in from PREFIX. install(1) has been putting themes there all along and nothing could read them; now a shipped theme is nameable without being copied, and a file of yours with the same name shadows it, which is how a root-owned theme gets edited. A name, not a path. The directory is what makes a theme switchable, listable and shadowable, and a path silently does none of those, so `theme_name "../x.kdl"` is refused with a line pointing at `include`, which still works and is still the answer for a file somewhere a directory of names cannot reach. A theme that is not there is one complaint and no more (D9): the rest of the config applies, because losing your keybindings over a mistyped colour scheme would be the wrong trade. A theme file is read by the same loader, so it is watched like any other: saving one reloads the session wearing it, and the derivations (tab_status_fg, tab_idle_bg) run over the theme's own colours exactly as before. Switching without editing anything, over the socket a session already has: slosh -s main cmd theme # amber default* ... slosh -s main cmd '{"cmd":"theme","name":"amber"}' # now slosh -s main cmd '{"cmd":"theme","name":"amber","save":true}' The session holds the name over later reloads, so saving your config for an unrelated reason does not put the old colours back; `save` writes the theme_name line into the file, replacing the one already there and leaving every other line and comment alone -- dumping the whole config back over itself would reformat a hand-written file and drop its comments, which is not a fair price for changing a colour scheme. A name is tried on a throwaway config first, so a typo costs nothing. An empty name gives the answer back to the file. --dump-config stops writing colours: it writes the theme's name and the colours a config overrode by hand, so a dumped config keeps following its theme instead of freezing it. --dump-theme is the other half and is new: the resolved palette as a theme file, which is how you start one from the session in front of you rather than from an empty file. It is also what keeps contrib/themes/default.kdl honest -- that file is now the annotated reference (the commented palette moved there out of config.kdl, where it was 119 lines of colour in the middle of the prose), and a test compares it against the compiled-in one. While in there: tests/test_themes.py's "every theme sets every colour" guard had been grepping for `&c->`, the spelling before the colour table moved to offsetof, so it had been finding zero colours and passing for months. Fixed, with the derived and opt-in colours exempted for the reasons they are derived and opt-in, and with a check that the guard found a table at all.
* sidebar: air between tabs (tab_gap)Peter Geissler2026-09-20
| | | | | | | | | | | | | | | | | | A tab carrying three rows of wrapped status and the tab under it carrying three more read as one column of text: the labels are in there, but the list has stopped looking like a list. tab_gap is the blank rows between them, 0 by default, which is exactly what the sidebar has always drawn. It is the space *between* tabs and nothing else. Above the first tab is tab_bar_pad's and before the button is newtab_pad's, so the gap is applied before each label except the first and none of the three is ever paid twice. Given up a row at a time when the list is short of room, ahead of every label and the button, which is the same order the pad and the statuses already follow: a gap that pushed a tab off the bottom would be spacing costing you the thing it spaces. Paint rather than layout, so tuning it repaints without reflowing any pane. Sidebars only -- the top strip is one row, and the space between tabs there is the label's own padding.
* sidebar: a status can have more than one row (tab_bar_status_lines)Peter Geissler2026-09-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sixteen cells is not enough for a sentence, and a sentence is what a pane has to say: "add a summary…" is most of a status and none of its meaning. tab_bar_status_lines 3 word-wraps instead of cutting, and the same column carries forty-eight cells rather than sixteen. Wrapped, the rows under a tab stop being a list of panes and become a paragraph each, so the shape no longer says where one pane's status ends and the next begins -- both are italic text down one column. Alternate panes are drawn on alternate bands to say it instead: tab_status_stripe, derived from the theme like tab_status_fg, so a theme that has never heard of any of this still gets a band in its own family. Nothing is painted at one line, where there is no ambiguity to resolve and a band would take a translucent terminal's background away for nothing. 1 is the default and is the old behaviour exactly, down to cutting at the column rather than the last word before it: with no next row to move the word to, breaking early would spend cells on nothing. The reason to prefer a word boundary only exists once there is somewhere for the word to go. Rows count against tab_bar_status as before, so wrapping trades panes for words within the same allowance, and the allowance itself still gives way to the tabs. A status that will not fit whole is dropped whole and reported with the ellipsis, rather than shown as a fragment that reads like the whole thing. Every row of a status is the same `find:` door. tabstatus's buffer goes to 256 to match pane_status's own slot: at one line the drawing cut it anyway, but wrapped it is the whole string that has to survive the trip.
* tabs: air before the new-tab button, and the option to do without itPeter Geissler2026-09-20
| | | | | | | | | | | | | | | | | | | | | The `+` is the one entry in the strip that does not mean "go here", and it sits at the end of a list where every other entry does. Flush against them it is what you hit when you meant the last tab -- most easily in a sidebar, where the target is the full width of the row and the pointer only has to be one row low. newtab_pad is the nothing in between: blank rows in a sidebar, blank columns on top, one by default, which is enough to make the slip a miss. It is paint rather than layout, like tab_bar_pad: the panes' rectangle is the same at 0 as at 5, so tuning it repaints without reflowing anyone. And it is given up before the button is -- a strip short of room drops the spacing one cell at a time and still draws what the spacing was protecting, because spacing must never cost you the thing it spaces. newtab_button false removes the button outright, for people who make tabs from the keyboard and would rather have the row (or the columns) back. Only the place to click it goes: the chord and the palette entry still work. Setting newtab_mark "" already did this by omission; this says it on purpose, and says it in --dump-config.
* sidebar: framed like a pane, and in compact mode framed *with* it ↵user2026-09-10
| | | | | | | | | | | | | | | | | | | | | | (tab_bar_chrome) A list of tabs sitting in bare columns beside a framed layout reads as text that wandered in from outside. So the sidebar gets a frame of its own -- and in compact mode not its own: its inner vertical lands on the tab area's ring column, and because the lines are strokes that union with whatever is already in the cell, the corners become tees without anyone computing a junction. The sidebar and the layout come out as one figure, which is the whole point. Classic mode gets a free-standing frame in the idle frame colour, rounded or square with everything else. The frame costs a column each side and a row top and bottom, taken from the sidebar's own budget -- and dropped entirely, before the list is, when the sidebar is too small to afford it: chrome must not displace what it is chrome for. The content box (cx/cw) now feeds the labels, the status rows, their hits and the truncation budget alike, so the frame cannot disagree with where the clicks land.
* sidebar: what each tab's panes are saying, said under the tab (tab_bar_status)user2026-09-10
| | | | | | | | | | | | | | | | | | Panes already announce a one-line status over OSC 5577, and it rendered in exactly two places -- both inside the pane's own frame, which is the one place you are not looking when you most want it. The sidebar has the vertical room the top strip never had: under each tab, up to tab_bar_status rows of what the panes inside said, in tree order, dim like the pane count. A dead pane's row says how it died instead (exit_words), the same substitution its own frame makes. The cap's last row is spent on an ellipsis rather than one more status pretending the list is complete, and a status cut to the sidebar's width ends in one too -- 'building 3' is a different fact than 'building 3/7'. Each row is a find: hit, the verb that already means 'go to this pane', so clicking a status jumps to the pane that said it, across tabs. Freshness costs nothing new: an OSC status marks the pane dirty, the same path the bell indicator rides out of background tabs.
* sidebar: a row of air on top (tab_bar_pad), indicators under the labels' insetuser2026-09-10
| | | | | | | | | | | | | | One blank row above the first tab by default: a list starting in the very corner reads as cramped, and in compact mode the row lines the first tab up with the pane content inside the ring rather than with the ring's top line. The pad is where the drawing starts, not a layout fact -- the panes' rect is identical at pad 0 and pad 5, so tuning it repaints without reflowing anyone. The bottom indicators (pane count, prefix badge) move in one cell to sit under the labels' own leading space; flush at the edge column they read as misaligned on the left and collide with the compact ring's corner on the right.
* tabs: the strip can stand on its side (tab_bar_side left/right)user2026-09-10
| | | | | | | | | | | | | | | | A sidebar lists one tab per row down the chosen edge, tab_bar_width columns wide; the panes trade the strip's row for the sidebar's columns in tab_area(), the one place that arithmetic lives. The per-tab cell drawing is extracted from draw_tab_strip (label, rename editor, bell, hover, drop states, hit) and shared, so every mouse verb -- click, double-click rename, drag to a tab, drop on + -- works in both shapes because the hits move with the cells. The strip's indicators (pane count, prefix badge) take the sidebar's bottom rows, reserved first under the same budgeting rule the strip applies from the right. The status line below keeps the full width. A terminal too narrow to give up the columns falls back to top, re-derived per frame, so a resize moves the bar without anyone storing state.
* docs: sweep the em dashesuser2026-09-02
| | | | | | | Parentheses for the asides, colons for the explanations, commas and semicolons for the joins, (none) for the empty table cells. Same treatment the landing page got, across README, docs/, and both manpages (\(em included).
* attach tag: just the count, in theme coloursuser2026-09-02
| | | | | | | The +x+y offset goes -- 'N clients' says the thing that matters. The inverse-video chip goes with it: the tag now draws in attach_fg / attach_bg from the theme, defaulting to gray ink on the terminal's own background. Standing information, not an announcement.
* multi-attach: say who else is watching, and where you areuser2026-09-02
| | | | | | | | | | | | A small tag in each client's own top-right corner when several terminals share the session: the viewer count, and on a view that is a crop being panned by somebody else's cursor, the crop's offset into the shared screen ("2 clients +12+4") -- which is exactly the moment a screen moving on its own needs explaining. Stamped per client after projection, because every terminal has its own count of others and its own offset; the shared status bar is composed once and can be cropped out of a panned view anyway. attach_indicator false hides it.
* multi-attach: the config knobsuser2026-09-02
| | | | | | | | | | | | | The patch made shared attach unconditional; these make it a policy. multi_attach false restores the classic displacing attach (EXIT_REPLACED, which old clients already understand). size_follows picks whose size the shared screen takes: active (the patch's rule), smallest (the tmux rule: filler, never a crop), or largest. The size fold lives in apply_canvas, so any attach, resize or departure can move the canvas under the folding policies -- including a non-active client leaving, which under smallest may have been the very client holding the floor down. A config reload re-applies both knobs to the running session.
* Add competitive multiplayer support.Ingmar Steen2026-09-02
| | | | Last input wins, canvas size is adjusted to active connection.
* shaders: remove the .so plugin loaderuser2026-09-02
| | | | | | | | | | | | The static musl release builds cannot dlopen -- musl compiles it out -- so loadable shader plugins were a feature most shipped binaries could not use. Nothing we ship used it either: every shader in contrib/shaders is an expression. Gone: the dlopen/glob loader in shader.c, shader_dir in the config, the plugin ABI table and entry macro, the Windows dl*/glob shims that existed only for it, the contrib/shader-plugin skeleton, its tests, and every doc mention. shader_abi.h stays as the shader model (cell_t, shade_ctx_t, shader_t) with a note about what it used to be.
* ctrl_d_exits: Ctrl-D at a prompt, where the tty cannot do itPeter Geissler2026-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Windows has no VEOF. The console driver does not know the character, so ^D arrives at cmd.exe and PowerShell as an ordinary keystroke and they ignore it -- it even echoes, which is how you find out: the line reads `echo hello^D`. The one key that closes a pane on every other platform does nothing at all, and closing a pane becomes a word you have to type. That you can type `exit` instead is the tell: the intent was never ambiguous, only unspoken. So slosh speaks it. What goes to the pane is the word, not a signal and not a close from outside -- the shell runs its own cleanup, returns its own status, and keep_dead decides what is left behind, all three of which reaching past it would skip. It is also what the user would have typed, so there is nothing new to explain. The knob is what makes it honest, because a wrong guess costs a pane. It fires only with the shell itself in the foreground (a program that is running may want the EOF for itself -- `cat` reading to end is the whole job), only on the primary screen (in an editor or a pager ^D is half a page down, and the alternate screen is the pane stating that rather than us matching process names), and only on an empty line (POSIX sends EOF there; what it does not do is discard what you typed). The line is an estimate. The shell's editor is on the far side of a pty, so pane_send_key counts what it forwarded since the last Enter. Editing it does not model -- a recalled history entry, ^U, completion -- leaves the count too high, which forgets to exit. That is the direction to be wrong in; the other one throws away a half-typed command. Default true on Windows, false on POSIX, where the line discipline already does this and does it properly: ^D there is also EOF for `cat` and every REPL, none of which is ours to intercept. A knob rather than an #ifdef so the guards are the same code everywhere and can be tested where the test suite runs -- test_ctrl_d.py turns it on and drives all four decisions, plus the case that does exit. Telling trapped from forwarded needs a program that reports what it received: on POSIX a forwarded ^D also ends an idle shell, and looking for the word `exit` cannot separate them either, because bash prints `exit` itself on EOF. Verified on the Windows box as well, where it is the default: ^D at an idle cmd.exe prompt takes the pane (and with it the session, having no panes left), `more` in the foreground keeps its own EOF, and a half-typed line survives with the line still on screen.
* slosh(5): the file formats get their manpage; slosh(1) learns shadersuser2026-08-27
Section 5 is where unix keeps its file formats, and slosh has two documents sharing one syntax -- the configuration and the layouts -- so they share a page the way they share a parser. docs/slosh.5 covers the KDL subset, where the file lives and how reload refuses a broken one, include and its precedence, every top-level setting grouped the way config.md groups them, the theme block, the shader vocabulary with the expression language summarised, the states and their ranking, the keys block including direct bindings, and the layout schema (tab, pane, and their properties). Held to the source like slosh.1 before it: every name in config.c's KNOWN_TOP -- the list the loader refuses unknown settings against, itself held to the loader by test_config.py -- must appear in the page, so a knob cannot be added without this page hearing about it. The pair must cross-reference each other, and both must be pure ASCII and lint clean under groff -ww. slosh(1) grows a SHADERS section -- the one feature a synopsis reader would never guess a multiplexer had -- and its SEE ALSO now names slosh(5) and nothing else: the other multiplexers can advertise themselves. Install puts the page under share/man/man5, the release tarballs carry both pages, and the Homebrew formula installs what the commit it is building has, guarded as before.