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feat: rename watch → toggle, auto-compile on start, built-in opener

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Problem: :Preview watch only registered a BufWritePost autocmd without
compiling immediately, required boilerplate to open output files after
first compilation, and was misleadingly named.

Solution: Rename watch → toggle throughout. M.toggle now compiles
immediately on activation. Add an open field to ProviderConfig: true
calls vim.ui.open(), a string[] runs the command with the output path
appended, tracked per-buffer so the file opens only once. All presets
default to { 'xdg-open' }. Health check validates opener binaries.
Guard the async compile callback against invalid buffer ids.
This commit is contained in:
Barrett Ruth 2026-03-02 23:37:44 -05:00
parent c62c930454
commit 673573044f
Signed by: barrett
GPG key ID: A6C96C9349D2FC81
12 changed files with 346 additions and 176 deletions
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16
spec/compiler_spec.lua
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@ -174,7 +174,7 @@ describe('compiler', function()
end)
end)
describe('watch', function()
describe('toggle', function()
it('registers autocmd and tracks in watching table', function()
local bufnr = helpers.create_buffer({ 'hello' }, 'text')
vim.api.nvim_buf_set_name(bufnr, '/tmp/preview_test_watch.txt')
@ -184,7 +184,7 @@ describe('compiler', function()
return { bufnr = b, file = '/tmp/preview_test_watch.txt', root = '/tmp', ft = 'text' }
end
compiler.watch(bufnr, 'echo', provider, ctx_builder)
compiler.toggle(bufnr, 'echo', provider, ctx_builder)
assert.is_not_nil(compiler._test.watching[bufnr])
helpers.delete_buffer(bufnr)
@ -208,7 +208,7 @@ describe('compiler', function()
return { bufnr = b, file = '/tmp/preview_test_watch_event.txt', root = '/tmp', ft = 'text' }
end
compiler.watch(bufnr, 'echo', provider, ctx_builder)
compiler.toggle(bufnr, 'echo', provider, ctx_builder)
assert.is_true(fired)
compiler.unwatch(bufnr)
@ -224,10 +224,10 @@ describe('compiler', function()
return { bufnr = b, file = '/tmp/preview_test_watch_toggle.txt', root = '/tmp', ft = 'text' }
end
compiler.watch(bufnr, 'echo', provider, ctx_builder)
compiler.toggle(bufnr, 'echo', provider, ctx_builder)
assert.is_not_nil(compiler._test.watching[bufnr])
compiler.watch(bufnr, 'echo', provider, ctx_builder)
compiler.toggle(bufnr, 'echo', provider, ctx_builder)
assert.is_nil(compiler._test.watching[bufnr])
helpers.delete_buffer(bufnr)
@ -251,7 +251,7 @@ describe('compiler', function()
return { bufnr = b, file = '/tmp/preview_test_watch_stop.txt', root = '/tmp', ft = 'text' }
end
compiler.watch(bufnr, 'echo', provider, ctx_builder)
compiler.toggle(bufnr, 'echo', provider, ctx_builder)
compiler.unwatch(bufnr)
assert.is_true(stopped)
assert.is_nil(compiler._test.watching[bufnr])
@ -273,7 +273,7 @@ describe('compiler', function()
}
end
compiler.watch(bufnr, 'echo', provider, ctx_builder)
compiler.toggle(bufnr, 'echo', provider, ctx_builder)
assert.is_not_nil(compiler._test.watching[bufnr])
compiler.stop_all()
@ -294,7 +294,7 @@ describe('compiler', function()
return { bufnr = b, file = '/tmp/preview_test_watch_status.txt', root = '/tmp', ft = 'text' }
end
compiler.watch(bufnr, 'echo', provider, ctx_builder)
compiler.toggle(bufnr, 'echo', provider, ctx_builder)
s = compiler.status(bufnr)
assert.is_true(s.watching)