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Barrett Ruth 4732696a62
fix(compiler): one-shot builds and :Preview open provider config (#25)
* fix(compiler): skip reload command for one-shot builds

Problem: compile() unconditionally resolved the reload command, so
:Preview build on a provider with reload = function/table (e.g. typst)
would start a long-running process (typst watch) instead of a one-shot
compile (typst compile). Error diagnostics were also lost because
typst watch does not exit non-zero on input errors.

Solution: add an opts parameter to compile() with a oneshot flag.
M.build() passes { oneshot = true } so resolve_reload_cmd() is
skipped and the one-shot path is always taken. toggle() continues
to call compile() without the flag, preserving long-running behavior
for watch mode.

* fix(compiler): respect provider open config in M.open()

Problem: :Preview open always called vim.ui.open regardless of the
provider's open field. Providers configured with a custom opener
(e.g. open = { 'sioyek', '--new-instance' }) were ignored, so the
first build opened with sioyek but :Preview open fell back to the
system default.

Solution: init.lua resolves the provider's open config and passes it
to compiler.open(). If open_config is a table, the custom command is
spawned with the output path appended. Otherwise vim.ui.open is used
as before.

* fix: normalize notify prefix to [preview.nvim]: everywhere

Problem: some vim.notify calls used [preview.nvim] (no colon) while
others used [preview.nvim]: — inconsistent with the log module format.

Solution: add the missing colon and space to all notify calls in
init.lua and compiler.lua so every user-facing message matches the
[preview.nvim]: prefix used by the log module.

* ci: format
2026-03-04 02:18:28 -05:00
.github/workflows ci: format 2026-03-01 17:22:59 -05:00
doc docs: update help file for recent additions (#18) 2026-03-03 15:12:28 -05:00
lua/preview fix(compiler): one-shot builds and :Preview open provider config (#25) 2026-03-04 02:18:28 -05:00
plugin feat: rename 2026-03-02 21:23:40 -05:00
spec feat: unified reload field for live-preview (SSE + long-running watch) (#19) 2026-03-03 16:41:47 -05:00
.busted ci: format 2026-03-01 17:22:59 -05:00
.editorconfig ci: format 2026-03-01 17:22:59 -05:00
.gitignore ci: format 2026-03-01 17:22:59 -05:00
.luarc.json ci: format 2026-03-01 17:22:59 -05:00
.prettierrc ci: format 2026-03-01 17:22:59 -05:00
flake.lock ci: format 2026-03-01 17:22:59 -05:00
flake.nix feat: rename 2026-03-02 21:23:40 -05:00
LICENSE ci: format 2026-03-01 17:22:59 -05:00
preview.nvim-scm-1.rockspec feat: rename 2026-03-02 21:23:40 -05:00
README.md doc: cleanup readme 2026-03-03 13:44:43 -05:00
selene.toml ci: format 2026-03-01 17:25:34 -05:00
stylua.toml ci: format 2026-03-01 17:22:59 -05:00
vim.yaml ci: format 2026-03-01 17:22:59 -05:00

preview.nvim

Async document compilation for Neovim

An extensible framework for compiling documents (LaTeX, Typst, Markdown, etc.) asynchronously with error diagnostics.

Features

  • Async compilation via vim.system()
  • Built-in presets for Typst, LaTeX, Markdown, and GitHub-flavored Markdown
  • Compiler errors as native vim.diagnostic
  • User events for extensibility (PreviewCompileStarted, PreviewCompileSuccess, PreviewCompileFailed)

Requirements

  • Neovim 0.11+

Installation

Install with your package manager of choice or via luarocks:

luarocks install preview.nvim

Documentation

:help preview.nvim

FAQ

Q: How do I define a custom provider?

require('preview').setup({
  typst = {
    cmd = { 'typst', 'compile' },
    args = function(ctx)
      return { ctx.file }
    end,
    output = function(ctx)
      return ctx.file:gsub('%.typ$', '.pdf')
    end,
  },
})

Q: How do I override a preset?

require('preview').setup({
  typst = { env = { TYPST_FONT_PATHS = '/usr/share/fonts' } },
})

Q: How do I automatically open the output file?

Set open = true on your provider (all built-in presets have this enabled) to open the output with vim.ui.open() after the first successful compilation. For a specific application, pass a command table:

require('preview').setup({
  typst = { open = { 'sioyek', '--new-instance' } },
})