0.13.0 — 2026-06-26

Release Notes

Mixed cycle. One deps swap (G1 toml_edit removal) takes another
chunk off the binary, and two UX gaps from v0.10 / v0.12 close
out (G2 preview Forwarding section, G3 doctor's
ProxyCommand %h/%p/%r substitution). README + README.ko
caught up to four pieces of v0.8-v0.12 surface that hadn't been
documented.

Added

• Preview panel shows typed Forwarding summary + first entry
  (G2). v0.10 G1 promoted the three *Forward directives to
  typed Vec; v0.12 R3 made them editable through a list
  modal. The v0.6 preview pane never caught up — Forwarding
  configuration was invisible until you opened the form. v0.13
  G2 adds:

  Forward:  L:2 R:1 D:0
            8080 localhost:80
  

  Local / Remote / Dynamic counts on one row, first entry on
  the next so the panel shows content, not just a count.
  Section is omitted entirely when every Vec is empty
  (no row, no blank line gap) — same shape as the existing
  Extra handling.

• doctor substitutes %h / %p / %r in ProxyCommand
  tokens before walking PATH (G3). v0.10 G4 surfaced
  "ProxyCommand binary not on PATH" but skipped any token
  containing % or $. The most common shape —
  ProxyCommand nc %h %p or
  ProxyCommand corp-helper %h %p — fell exactly into that
  skip, so the check passed silently when it should have
  fired. v0.13 G3 narrows the skip:

  • $ still skips (shell variables — we don't shell out).
  • %h / %p / %r get substituted from the host's typed
    fields (with sensible fallbacks: alias for hostname,
    "22" for port, $USER / $USERNAME / "user" for user).
    %% becomes a literal %.
  • After substitution, if any % is still in the token
    (anything we don't model — %C, %u, %L) we skip.
    Modelling the full OpenSSH substitution set would creep
    into anti-feature 5 (complete config(5) parser); the
    three we cover are the ones that actually appear in real
    ProxyCommand strings.

Changed

• toml = "0.5" (drops toml_edit transitive) (G1).
  cargo bloat on v0.12.0 ranked toml_edit at 167 KiB of
  .text — 11.7% of the binary — and v0.10 G1 / v0.12 R3
  showed sshc never needs format-preservation (state.toml is
  rewritten from scratch every save). Going back to
  toml = "0.5" (pre-toml_edit split) drops the whole
  format-preserving layer.

  Measured impact on macOS arm64 release binary:

  Phase	Bytes	Δ vs prior
  v0.12.0 (master)	2,729,456	—
  v0.13.0 (after toml swap)	2,470,688	−258,768 (−9.5%)

  cargo-dist artifact (per-platform .tar.xz / .zip) deltas
  vs v0.12.0 land at tag-push time and are reported in the
  GitHub Release notes.

  One internal schema reorder accompanied the swap:
  MemorySection::sort_axis (scalar) moved BEFORE
  recent: Vec<RecentEntry> (array of tables). toml 0.5
  enforces the TOML spec's "scalar fields before tables"
  rule; toml 0.8's format-preserving emitter had silently
  reordered when v0.12 G3 appended sort_axis after recent.
  #[serde(default)] on every field means existing v0.12
  state.toml files load cleanly regardless of where their
  keys land.

• README + README.ko: four gap fixes (R1).

  • Windows ARM64 (sshc-aarch64-pc-windows-msvc.zip) artifact
    added to the Windows install section — it's been shipping
    since v0.8 but was undocumented.
  • Hero / 소개 paragraph quotes the v0.12.0 measured release
    sizes (macOS arm64 ~810 KB, Linux x64 ~1.16 MB, Windows
    x64 ~1.10 MB) so the "small single binary" claim has
    concrete numbers.
  • Form section splits IdentityFile multi-value into its own
    paragraph and adds the in-modal keymap table covering
    Shift+↑/↓ reorder + the IdentityFile candidate cycle
    that lives in edit mode.
  • v keymap row rewritten to clarify it opens the
    resolved ssh -G <alias> output for debugging
    Include / Match ordering — the v0.6 wording sounded like
    sshc was validating the alias itself.

Internal

• substitute_known(token, host) -> Option<String> helper
  isolates the OpenSSH-style marker substitution. Returns
  None on any unknown %x so the caller can continue
  without branching on the string contents. Five new tests.
• Two new preview tests (renders_with_multi_forwarding_* /
  renders_without_forwarding_omits_section) +
  render_text(term) test-helper that walks the TestBackend
  buffer into a String for substring assertions.
• toml downgrade: a one-line Cargo.toml change. No
  src/state/mod.rs API surface moved — from_str and
  to_string_pretty are stable from 0.5 onwards.

Migration

• state.toml: no migration. #[serde(default)] on every
  field means missing keys (and reordered keys) load
  cleanly.
• v0.13 binaries running on a v0.12 state.toml file will
  pick up the v0.12 sort_axis value verbatim; the next
  save reorders the keys so the file conforms to toml 0.5's
  scalar-before-table requirement.

Out of scope (carried into v0.14+)

• nucleo_matcher → smaller fuzzy (69 KiB candidate).
• ureq surface trim (118 KiB candidate; v0.9 R7 already did
  the rustls→native-tls win).
• K/J as Shift+↑/↓ reorder alias.
• Help modal Shift+↑/↓ + S persistence note.
• doctor: SSHC_NO_OSC52 + Wayland-no-display hint.

Install sshc 0.13.0

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/hang-in/sshc/releases/download/v0.13.0/sshc-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/hang-in/sshc/releases/download/v0.13.0/sshc-installer.ps1 | iex"

Install prebuilt binaries via Homebrew

brew install hang-in/tap/sshc

Download sshc 0.13.0

File	Platform	Checksum
sshc-aarch64-apple-darwin.tar.xz	Apple Silicon macOS	checksum
sshc-x86_64-apple-darwin.tar.xz	Intel macOS	checksum
sshc-aarch64-pc-windows-msvc.zip	ARM64 Windows	checksum
sshc-x86_64-pc-windows-msvc.zip	x64 Windows	checksum
sshc-aarch64-unknown-linux-gnu.tar.xz	ARM64 Linux	checksum
sshc-x86_64-unknown-linux-gnu.tar.xz	x64 Linux	checksum