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  v0.1.2 Stable

  natsukium released this 2026-10-07 11:53:32 +09:00 | 455 commits to main since this release

  Signed by natsukium

  SSH key fingerprint: SHA256:ByU5VseUJyH2UYFs65yNYhqJHhqJzP8BNBlvG0a6WOs

  felis v0.1.2, built from b6da5cd5d7daf007b8c2fb16f733153e200fb90e.

  Downloads

  • Linux (x86_64): felis-x86_64-linux.tar.gz. Unpack it anywhere and run bin/felis.
  • macOS (Apple silicon): felis-aarch64-darwin.tar.gz. Before the first run, clear the quarantine flag: xattr -dr com.apple.quarantine <directory>. Then run bin/felis or open felis.app.
  • Windows (x86_64): felis-x86_64-pc-windows-msvc.zip. Unpack its three executables into one directory on your PATH and run felis.exe.
  • Nix: nix run github:felis-terminal/felis/v0.1.2. The flake offers prebuilt binaries from https://nix-cache.natsukium.com.
  • Homebrew (macOS Apple silicon, Linux x86_64): brew install felis-terminal/tap/felis.

  Step-by-step instructions are in install.md.

  These three platforms are supported. ARM64 Linux (aarch64-linux) builds from source through the flake but is not supported.

  felis.proto and felis-config.schema.json are the IPC wire schema and the config schema of this build, for tools that talk to felis or validate its config.

  Changes

  Mostly fixes. Wide characters, emoji sequences and keycaps keep their cells through edits, resizes and font fallback;
  text-sizing (OSC 66) characters stay whole at the screen edges and under line and column edits; Kitty graphics place the
  cursor beside an image and keep a naturally sized image at its pixel size across font zoom; and variation sequences such
  as 葛󠄀 draw their variant glyph. Also new: zsh shell integration, and felis <name> running external felis-<name>
  commands in place of felis frontend <name>.

  Added

  • share/felis/shell-integration/felis.zsh: sourced from .zshrc, it makes zsh emit OSC 133 prompt marks with exit
    codes and OSC 7 directory reports, which sessions send --wait, last_exit_code, scroll_to_prompt and
    capture --source command-output read. See the "Mark shell prompts" how-to.
  • home-manager: programs.felis.enableZshIntegration sources that script from the generated .zshrc; it defaults
    to home.shell.enableZshIntegration.

  Changed

  • CLI: felis <name> … runs felis-<name> (beside felis, then on $PATH) for any word that is not a built-in
    verb, and felis help <name> runs felis-<name> --help. This replaces felis frontend <name>, which is removed:
    write felis tui instead of felis frontend tui.

  Fixed

  • A variation sequence such as 葛󠄀 (U+845B U+E0100) draws its variant glyph when the font that draws the base
    character defines one (Noto Sans CJK JP and HackGen do; Moralerspace does not). felis does not switch to another font
    for the sequence, so with a font that lacks the variant the default glyph stays.
  • Resizing the window while a shell waits at an OSC 133 prompt no longer leaves a stale copy of the prompt's first
    line on every resize (zsh or fish with a prompt line that fills the width). felis blanks the prompt and lets the shell
    repaint it, as kitty and Ghostty do; a shell that does not repaint opts out with OSC 133;A;redraw=0.
  • Writing over or erasing one half of a multi-codepoint wide character (❄️, 🇯🇵, 👩‍💻, a keycap) removes the whole
    character instead of losing neighboring text: a shell prompt that redraws an unchanged emoji keeps it, and ECH,
    DECERA, DECFRA, DECSEL, DECSED and OSC 66 no longer leave half a glyph behind (for a plain wide 字 too). REP after a
    cluster repeats the whole cluster instead of its base character.
  • Inserting or deleting characters or columns (ICH, DCH, insert mode, SL/SR, DECIC/DECDC, DECBI/DECFI), scrolling inside
    left/right margins, DECCRA, and shrinking the alternate screen no longer split a wide character into an orphaned half
    that the next edit misplaces, and an emoji that asks for two cells at the right margin no longer spills past it.
    Resizing no longer shifts a line right after an emoji that could not widen, and DECSED, SR and DECBI/DECFI no longer
    reveal text a scroll had already removed.
  • A glyph that a fallback face draws wider than its cells (an East Asian Ambiguous ※ from a CJK font, or a
    text-presentation emoji such as ☺ from the color-emoji font) is shrunk to fit and centered in its cell, instead of
    overlapping the next character.
  • An emoji sequence or a character with a mark that the font draws wider than its cells is shrunk to fit them in the
    same way: a regional-indicator pair with no flag (🇦🇦), a ZWJ sequence the font does not join, a skin tone on a base
    that takes none (😀🏻), a ※ with a combining mark, or a ❤️ left in one cell at the last column.
  • With font.features set, a ligature wider than the characters it replaces is drawn as those characters instead.
  • A character that Unicode displays as an emoji by default (⭐, ⚡, ☕, ⌚, 🀄) is drawn in color from the
    emoji font, even when a symbol font earlier in the fallback chain, an explicit font.fallback list or the primary
    font also covers it; it was drawn as a small monochrome symbol. Adding VS15 (⭐︎) still asks for the text form.
  • A keycap emoji (#️⃣, 1️⃣) is drawn as one full-size keycap instead of a tiny # beside an empty keycap.
  • Printing no longer slows down by up to eight times for the rest of the session once a text-sizing (OSC 66) character
    has been written.
  • A text-sizing (OSC 66) character taller than one row is no longer torn apart by inserting or deleting characters on
    one of its rows, by insert mode, by column shifts or scrolls in a region whose margin crosses it, or by inserting or
    deleting lines through it: it is erased whole, as kitty does. A scroll that pushes its upper rows into scrollback
    keeps them there. Writing over its lower rows also erases it whole, and printing in insert mode in front of a sized
    character no longer erases part of it.
  • A text-sizing (OSC 66) character near the bottom or right edge is moved onto the screen whole, as kitty does, instead
    of being cut off at the edge and overwritten by the next line: it wraps or scrolls the region up to fit, steps past
    the lower rows of a taller character, and in insert mode shifts every row it covers. A run wider than the screen is no
    longer dropped whole when each of its characters fits; only a character too big for the screen or the scroll region is
    dropped. A combining mark or VS16 in the run stays with its character, and a w narrower than the glyph no longer
    leaves the glyph's right half outside the block.
  • A zero-width joiner between characters that are not both emoji (👩‍字, क‍ख‍ग, x‍👍) no longer collapses them
    into one two-cell glyph: they take the cells the application counts (4, 3 and 3), so the rest of the line stays where
    the application put it.
  • Querying grapheme cluster mode (CSI ? 2027 $ p) reports it permanently set (3) rather than set (1), so an
    application can tell that turning it off has no effect.
  • The cursor, a selection, and the bidi-override warning cover both cells of a wide character (字, あ, an emoji),
    from either half: a block cursor no longer hides the right half of the glyph, and a drag that ends or starts on a wide
    character highlights and copies all of it. The cursor trail of a post-process shader follows the same shape.
  • The IME pre-edit, the search and confirmation bars, and the link preview give a combining mark or an emoji sequence
    the cells the terminal gives it (é typed as e + U+0301 takes one cell, ❤️ and 🇯🇵 two), draw a flag or a skin
    tone as itself, and no longer draw a wide character past the window's right edge.
  • Pressing a bare modifier (Ctrl, Shift, Alt, Cmd) or releasing a key no longer returns a scrolled-back view to the live
    screen, so Cmd+C copies a selection made in scrollback.
  • Text printed right after a Kitty graphics image in the same write lands beside the image, as in kitty, instead of
    under it: the cursor moves to the image's last row, right of it, and an image placed near the bottom scrolls the
    screen instead of overlapping the rows above. On the alternate screen, images scroll with the text. A
    Unicode-placeholder put (a=p,U=1) no longer draws a stray copy of the image at the cursor.
  • A Kitty graphics image placed without c=/r= keeps its pixel size when the cell size changes (font zoom, a config
    font change, a scale-factor change) instead of being stretched or squashed into its old cell box, and an image placed
    before the window reported its size no longer keeps an extent of one cell per pixel. With a source rectangle (x,
    y, w, h), the extent and the cursor move follow the rectangle instead of the whole image.

  Downloads

  • Source code (ZIP)
    0 downloads
  • Source code (TAR.GZ)
    3 downloads

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  • felis-aarch64-darwin.tar.gz
    3 downloads · 2026-10-07 11:53:35 +09:00 · 9.6 MiB
  • felis-config.schema.json
    6 downloads · 2026-10-07 11:53:37 +09:00 · 37 KiB
  • felis.proto
    3 downloads · 2026-10-07 11:53:37 +09:00 · 89 KiB
  • felis-x86_64-linux.tar.gz
    6 downloads · 2026-10-07 11:53:34 +09:00 · 21 MiB
  • felis-x86_64-pc-windows-msvc.zip
    1 download · 2026-10-07 11:53:36 +09:00 · 9.5 MiB