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When using `true` as the value of a configuration option, the option is configured to use default values. For example, if a user configures virtual text to include the source globally (using vim.diagnostic.config) and a specific namespace or producer configures virtual text with `virt_text = true`, the user's global configuration is overriden. Instead, interpret a value of `true` to mean "use existing settings if defined, otherwise use defaults".
641 lines
28 KiB
Plaintext
641 lines
28 KiB
Plaintext
*diagnostic.txt* Diagnostics
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NVIM REFERENCE MANUAL
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Diagnostic framework *vim.diagnostic*
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Nvim provides a framework for displaying errors or warnings from external
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tools, otherwise known as "diagnostics". These diagnostics can come from a
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variety of sources, such as linters or LSP servers. The diagnostic framework
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is an extension to existing error handling functionality such as the
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|quickfix| list.
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Type |gO| to see the table of contents.
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==============================================================================
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QUICKSTART *diagnostic-quickstart*
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Anything that reports diagnostics is referred to below as a "diagnostic
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producer". Diagnostic producers need only follow a few simple steps to
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report diagnostics:
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1. Create a namespace |nvim_create_namespace()|. Note that the namespace must
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have a name. Anonymous namespaces WILL NOT WORK.
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2. (Optional) Configure options for the diagnostic namespace
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|vim.diagnostic.config()|.
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3. Generate diagnostics.
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4. Set the diagnostics for the buffer |vim.diagnostic.set()|.
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5. Repeat from step 3.
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Generally speaking, the API is split between functions meant to be used by
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diagnostic producers and those meant for diagnostic consumers (i.e. end users
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who want to read and view the diagnostics for a buffer). The APIs for
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producers require a {namespace} as their first argument, while those for
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consumers generally do not require a namespace (though often one may be
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optionally supplied). A good rule of thumb is that if a method is meant to
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modify the diagnostics for a buffer (e.g. |vim.diagnostic.set()|) then it
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requires a namespace.
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*diagnostic-structure*
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A diagnostic is a Lua table with the following keys:
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lnum: The starting line of the diagnostic
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end_lnum: The final line of the diagnostic
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col: The starting column of the diagnostic
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end_col: The final column of the diagnostic
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severity: The severity of the diagnostic |vim.diagnostic.severity|
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message: The diagnostic text
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source: The source of the diagnostic
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Diagnostics use the same indexing as the rest of the Nvim API (i.e. 0-based
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rows and columns). |api-indexing|
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*vim.diagnostic.severity* *diagnostic-severity*
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The "severity" key in a diagnostic is one of the values defined in
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`vim.diagnostic.severity`:
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vim.diagnostic.severity.ERROR
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vim.diagnostic.severity.WARN
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vim.diagnostic.severity.INFO
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vim.diagnostic.severity.HINT
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Functions that take a severity as an optional parameter (e.g.
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|vim.diagnostic.get()|) accept one of two forms:
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1. A single |vim.diagnostic.severity| value: >
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vim.diagnostic.get(0, { severity = vim.diagnostic.severity.WARN })
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2. A table with a "min" or "max" key (or both): >
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vim.diagnostic.get(0, { severity = {min=vim.diagnostic.severity.WARN})
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The latter form allows users to specify a range of severities.
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==============================================================================
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HIGHLIGHTS *diagnostic-highlights*
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All highlights defined for diagnostics begin with `Diagnostic` followed by
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the type of highlight (e.g., `Sign`, `Underline`, etc.) and the severity (e.g.
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`Error`, `Warn`, etc.)
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Sign, underline and virtual text highlights (by default) are linked to their
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corresponding default highlight.
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For example, the default highlighting for |hl-DiagnosticSignError| is linked
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to |hl-DiagnosticError|. To change the default (and therefore the linked
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highlights), use the |:highlight| command: >
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highlight DiagnosticError guifg="BrightRed"
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<
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*hl-DiagnosticError*
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DiagnosticError
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Used as the base highlight group.
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Other Diagnostic highlights link to this by default (except Underline)
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*hl-DiagnosticWarn*
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DiagnosticWarn
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Used as the base highlight group.
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Other Diagnostic highlights link to this by default (except Underline)
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*hl-DiagnosticInfo*
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DiagnosticInfo
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Used as the base highlight group.
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Other Diagnostic highlights link to this by default (except Underline)
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*hl-DiagnosticHint*
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DiagnosticHint
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Used as the base highlight group.
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Other Diagnostic highlights link to this by default (except Underline)
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*hl-DiagnosticVirtualTextError*
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DiagnosticVirtualTextError
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Used for "Error" diagnostic virtual text.
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*hl-DiagnosticVirtualTextWarn*
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DiagnosticVirtualTextWarn
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Used for "Warn" diagnostic virtual text.
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*hl-DiagnosticVirtualTextInfo*
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DiagnosticVirtualTextInfo
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Used for "Info" diagnostic virtual text.
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*hl-DiagnosticVirtualTextHint*
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DiagnosticVirtualTextHint
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Used for "Hint" diagnostic virtual text.
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*hl-DiagnosticUnderlineError*
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DiagnosticUnderlineError
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Used to underline "Error" diagnostics.
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*hl-DiagnosticUnderlineWarn*
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DiagnosticUnderlineWarn
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Used to underline "Warn" diagnostics.
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*hl-DiagnosticUnderlineInfo*
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DiagnosticUnderlineInfo
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Used to underline "Info" diagnostics.
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*hl-DiagnosticUnderlineHint*
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DiagnosticUnderlineHint
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Used to underline "Hint" diagnostics.
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*hl-DiagnosticFloatingError*
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DiagnosticFloatingError
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Used to color "Error" diagnostic messages in diagnostics float.
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See |vim.diagnostic.show_line_diagnostics()|
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*hl-DiagnosticFloatingWarn*
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DiagnosticFloatingWarn
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Used to color "Warn" diagnostic messages in diagnostics float.
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*hl-DiagnosticFloatingInfo*
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DiagnosticFloatingInfo
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Used to color "Info" diagnostic messages in diagnostics float.
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*hl-DiagnosticFloatingHint*
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DiagnosticFloatingHint
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Used to color "Hint" diagnostic messages in diagnostics float.
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*hl-DiagnosticSignError*
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DiagnosticSignError
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Used for "Error" signs in sign column.
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*hl-DiagnosticSignWarn*
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DiagnosticSignWarn
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Used for "Warn" signs in sign column.
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*hl-DiagnosticSignInfo*
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DiagnosticSignInfo
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Used for "Info" signs in sign column.
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*hl-DiagnosticSignHint*
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DiagnosticSignHint
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Used for "Hint" signs in sign column.
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==============================================================================
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SIGNS *diagnostic-signs*
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Signs are defined for each diagnostic severity. The default text for each sign
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is the first letter of the severity name (for example, "E" for ERROR). Signs
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can be customized using the following: >
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sign define DiagnosticSignError text=E texthl=DiagnosticSignError linehl= numhl=
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sign define DiagnosticSignWarn text=W texthl=DiagnosticSignWarn linehl= numhl=
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sign define DiagnosticSignInfo text=I texthl=DiagnosticSignInfo linehl= numhl=
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sign define DiagnosticSignHint text=H texthl=DiagnosticSignHint linehl= numhl=
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When the "severity_sort" option is set (see |vim.diagnostic.config()|) the
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priority of each sign depends on the severity of the associated diagnostic.
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Otherwise, all signs have the same priority (the value of the "priority"
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option in the "signs" table of |vim.diagnostic.config()| or 10 if unset).
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==============================================================================
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EVENTS *diagnostic-events*
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*DiagnosticsChanged*
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DiagnosticsChanged After diagnostics have changed.
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Example: >
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autocmd User DiagnosticsChanged lua vim.diagnostic.setqflist({open = false })
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<
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==============================================================================
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CUSTOMIZATION *diagnostic-config*
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If you need more customization over the way diagnostics are displayed than the
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built-in configuration options provide, you can override the display handler
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explicitly. For example, use the following to only show a sign for the highest
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severity diagnostic on a given line: >
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-- Disable the default signs handler
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vim.diagnostic.config({signs = false})
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-- Create a namespace. This won't be used to add any diagnostics,
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-- only to display them.
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local ns = vim.api.nvim_create_namespace("my_namespace")
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-- Create a reference to the original function
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local orig_show = vim.diagnostic.show
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local function set_signs(bufnr)
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-- Get all diagnostics from the current buffer
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local diagnostics = vim.diagnostic.get(bufnr)
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-- Find the "worst" diagnostic per line
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local max_severity_per_line = {}
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for _, d in pairs(diagnostics) do
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local m = max_severity_per_line[d.lnum]
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if not m or d.severity < m.severity then
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max_severity_per_line[d.lnum] = d
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end
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end
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-- Show the filtered diagnostics using the custom namespace. Use the
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-- reference to the original function to avoid a loop.
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local filtered_diagnostics = vim.tbl_values(max_severity_per_line)
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orig_show(ns, bufnr, filtered_diagnostics, {
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virtual_text=false,
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underline=false,
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signs=true
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})
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end
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function vim.diagnostic.show(namespace, bufnr, ...)
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orig_show(namespace, bufnr, ...)
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set_signs(bufnr)
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end
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<
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==============================================================================
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Lua module: vim.diagnostic *diagnostic-api*
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config({opts}, {namespace}) *vim.diagnostic.config()*
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Configure diagnostic options globally or for a specific
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diagnostic namespace.
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Configuration can be specified globally, per-namespace, or
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ephemerally (i.e. only for a single call to
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|vim.diagnostic.set()| or |vim.diagnostic.show()|). Ephemeral
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configuration has highest priority, followed by namespace
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configuration, and finally global configuration.
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For example, if a user enables virtual text globally with >
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vim.diagnostic.config({virt_text = true})
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<
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and a diagnostic producer sets diagnostics with >
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vim.diagnostic.set(ns, 0, diagnostics, {virt_text = false})
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<
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then virtual text will not be enabled for those diagnostics.
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Note:
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Each of the configuration options below accepts one of the
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following:
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• `false` : Disable this feature
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• `true` : Enable this feature, use default settings.
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• `table` : Enable this feature with overrides. Use an
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empty table to use default values.
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• `function` : Function with signature (namespace, bufnr)
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that returns any of the above.
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Parameters: ~
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{opts} table Configuration table with the following
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keys:
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• underline: (default true) Use underline for
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diagnostics. Options:
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• severity: Only underline diagnostics
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matching the given severity
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|diagnostic-severity|
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• virtual_text: (default true) Use virtual
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text for diagnostics. Options:
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• severity: Only show virtual text for
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diagnostics matching the given severity
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|diagnostic-severity|
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• source: (string) Include the diagnostic
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source in virtual text. One of "always"
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or "if_many".
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• format: (function) A function that takes
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a diagnostic as input and returns a
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string. The return value is the text used
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to display the diagnostic. Example:>
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function(diagnostic)
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if diagnostic.severity == vim.diagnostic.severity.ERROR then
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return string.format("E: %s", diagnostic.message)
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end
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return diagnostic.message
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end
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<
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• signs: (default true) Use signs for
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diagnostics. Options:
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• severity: Only show signs for diagnostics
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matching the given severity
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|diagnostic-severity|
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• priority: (number, default 10) Base
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priority to use for signs. When
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{severity_sort} is used, the priority of
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a sign is adjusted based on its severity.
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Otherwise, all signs use the same
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priority.
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• update_in_insert: (default false) Update
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diagnostics in Insert mode (if false,
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diagnostics are updated on InsertLeave)
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• severity_sort: (default false) Sort
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diagnostics by severity. This affects the
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order in which signs and virtual text are
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displayed. When true, higher severities are
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displayed before lower severities (e.g.
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ERROR is displayed before WARN). Options:
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• reverse: (boolean) Reverse sort order
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{namespace} number|nil Update the options for the given
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namespace. When omitted, update the global
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diagnostic options.
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disable({bufnr}, {namespace}) *vim.diagnostic.disable()*
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Disable diagnostics in the given buffer.
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Parameters: ~
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{bufnr} number|nil Buffer number. Defaults to the
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current buffer.
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{namespace} number|nil Only disable diagnostics for the
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given namespace.
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enable({bufnr}, {namespace}) *vim.diagnostic.enable()*
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Enable diagnostics in the given buffer.
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Parameters: ~
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{bufnr} number|nil Buffer number. Defaults to the
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current buffer.
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{namespace} number|nil Only enable diagnostics for the
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given namespace.
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fromqflist({list}) *vim.diagnostic.fromqflist()*
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Convert a list of quickfix items to a list of diagnostics.
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Parameters: ~
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{list} table A list of quickfix items from |getqflist()|
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or |getloclist()|.
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Return: ~
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array of diagnostics |diagnostic-structure|
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get({bufnr}, {opts}) *vim.diagnostic.get()*
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Get current diagnostics.
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Parameters: ~
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{bufnr} number|nil Buffer number to get diagnostics from.
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Use 0 for current buffer or nil for all buffers.
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{opts} table|nil A table with the following keys:
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• namespace: (number) Limit diagnostics to the
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given namespace.
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• lnum: (number) Limit diagnostics to the given
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line number.
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• severity: See |diagnostic-severity|.
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Return: ~
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table A list of diagnostic items |diagnostic-structure|.
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get_namespaces() *vim.diagnostic.get_namespaces()*
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Get current diagnostic namespaces.
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Return: ~
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table A list of active diagnostic namespaces
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|vim.diagnostic|.
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get_next({opts}) *vim.diagnostic.get_next()*
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Get the next diagnostic closest to the cursor position.
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Parameters: ~
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{opts} table See |vim.diagnostic.goto_next()|
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Return: ~
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table Next diagnostic
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get_next_pos({opts}) *vim.diagnostic.get_next_pos()*
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Return the position of the next diagnostic in the current
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buffer.
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Parameters: ~
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{opts} table See |vim.diagnostic.goto_next()|
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Return: ~
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table Next diagnostic position as a (row, col) tuple.
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get_prev({opts}) *vim.diagnostic.get_prev()*
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Get the previous diagnostic closest to the cursor position.
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Parameters: ~
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{opts} table See |vim.diagnostic.goto_next()|
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Return: ~
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table Previous diagnostic
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get_prev_pos({opts}) *vim.diagnostic.get_prev_pos()*
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Return the position of the previous diagnostic in the current
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buffer.
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Parameters: ~
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{opts} table See |vim.diagnostic.goto_next()|
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Return: ~
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table Previous diagnostic position as a (row, col) tuple.
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goto_next({opts}) *vim.diagnostic.goto_next()*
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Move to the next diagnostic.
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Parameters: ~
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{opts} table|nil Configuration table with the following
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keys:
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• namespace: (number) Only consider diagnostics
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from the given namespace.
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• cursor_position: (cursor position) Cursor
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position as a (row, col) tuple. See
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|nvim_win_get_cursor()|. Defaults to the current
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cursor position.
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• wrap: (boolean, default true) Whether to loop
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around file or not. Similar to 'wrapscan'.
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• severity: See |diagnostic-severity|.
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• enable_popup: (boolean, default true) Call
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|vim.diagnostic.show_line_diagnostics()| on
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jump.
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• popup_opts: (table) Table to pass as {opts}
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parameter to
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|vim.diagnostic.show_line_diagnostics()|
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• win_id: (number, default 0) Window ID
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goto_prev({opts}) *vim.diagnostic.goto_prev()*
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Move to the previous diagnostic in the current buffer.
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Parameters: ~
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{opts} table See |vim.diagnostic.goto_next()|
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hide({namespace}, {bufnr}) *vim.diagnostic.hide()*
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Hide currently displayed diagnostics.
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This only clears the decorations displayed in the buffer.
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Diagnostics can be redisplayed with |vim.diagnostic.show()|.
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To completely remove diagnostics, use
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|vim.diagnostic.reset()|.
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To hide diagnostics and prevent them from re-displaying, use
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|vim.diagnostic.disable()|.
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Parameters: ~
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{namespace} number The diagnostic namespace
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{bufnr} number|nil Buffer number. Defaults to the
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current buffer.
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*vim.diagnostic.match()*
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match({str}, {pat}, {groups}, {severity_map}, {defaults})
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Parse a diagnostic from a string.
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For example, consider a line of output from a linter: >
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WARNING filename:27:3: Variable 'foo' does not exist
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<
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This can be parsed into a diagnostic |diagnostic-structure|
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with: >
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local s = "WARNING filename:27:3: Variable 'foo' does not exist"
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local pattern = "^(%w+) %w+:(%d+):(%d+): (.+)$"
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local groups = {"severity", "lnum", "col", "message"}
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vim.diagnostic.match(s, pattern, groups, {WARNING = vim.diagnostic.WARN})
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<
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Parameters: ~
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{str} string String to parse diagnostics from.
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{pat} string Lua pattern with capture groups.
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{groups} table List of fields in a
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|diagnostic-structure| to associate with
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captures from {pat}.
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{severity_map} table A table mapping the severity field
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from {groups} with an item from
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|vim.diagnostic.severity|.
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{defaults} table|nil Table of default values for any
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fields not listed in {groups}. When
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omitted, numeric values default to 0 and
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"severity" defaults to ERROR.
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Return: ~
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diagnostic |diagnostic-structure| or `nil` if {pat} fails
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to match {str}.
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reset({namespace}, {bufnr}) *vim.diagnostic.reset()*
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Remove all diagnostics from the given namespace.
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Unlike |vim.diagnostic.hide()|, this function removes all
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saved diagnostics. They cannot be redisplayed using
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|vim.diagnostic.show()|. To simply remove diagnostic
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decorations in a way that they can be re-displayed, use
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|vim.diagnostic.hide()|.
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Parameters: ~
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{namespace} number
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{bufnr} number|nil Remove diagnostics for the given
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buffer. When omitted, diagnostics are removed
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for all buffers.
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set({namespace}, {bufnr}, {diagnostics}, {opts}) *vim.diagnostic.set()*
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Set diagnostics for the given namespace and buffer.
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Parameters: ~
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{namespace} number The diagnostic namespace
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{bufnr} number Buffer number
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{diagnostics} table A list of diagnostic items
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|diagnostic-structure|
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{opts} table|nil Display options to pass to
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|vim.diagnostic.show()|
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setloclist({opts}) *vim.diagnostic.setloclist()*
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Add buffer diagnostics to the location list.
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Parameters: ~
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{opts} table|nil Configuration table with the following
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keys:
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• namespace: (number) Only add diagnostics from
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the given namespace.
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• winnr: (number, default 0) Window number to set
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location list for.
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• open: (boolean, default true) Open the location
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list after setting.
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• title: (string) Title of the location list.
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Defaults to "Diagnostics".
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• severity: See |diagnostic-severity|.
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setqflist({opts}) *vim.diagnostic.setqflist()*
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Add all diagnostics to the quickfix list.
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|
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Parameters: ~
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{opts} table|nil Configuration table with the following
|
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keys:
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• namespace: (number) Only add diagnostics from
|
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the given namespace.
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• open: (boolean, default true) Open quickfix list
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after setting.
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• title: (string) Title of quickfix list. Defaults
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to "Diagnostics".
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• severity: See |diagnostic-severity|.
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*vim.diagnostic.show()*
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show({namespace}, {bufnr}, {diagnostics}, {opts})
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Display diagnostics for the given namespace and buffer.
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|
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Parameters: ~
|
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{namespace} number Diagnostic namespace
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{bufnr} number|nil Buffer number. Defaults to the
|
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current buffer.
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{diagnostics} table|nil The diagnostics to display. When
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omitted, use the saved diagnostics for the
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given namespace and buffer. This can be
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used to display a list of diagnostics
|
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without saving them or to display only a
|
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subset of diagnostics.
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{opts} table|nil Display options. See
|
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|vim.diagnostic.config()|.
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|
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*vim.diagnostic.show_line_diagnostics()*
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show_line_diagnostics({opts}, {bufnr}, {lnum})
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Open a floating window with the diagnostics from the given
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line.
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|
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Parameters: ~
|
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{opts} table Configuration table. See
|
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|vim.diagnostic.show_position_diagnostics()|.
|
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{bufnr} number|nil Buffer number. Defaults to the current
|
|
buffer.
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{lnum} number|nil Line number. Defaults to line number
|
|
of cursor.
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Return: ~
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tuple ({popup_bufnr}, {win_id})
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|
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*vim.diagnostic.show_position_diagnostics()*
|
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show_position_diagnostics({opts}, {bufnr}, {position})
|
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Open a floating window with the diagnostics at the given
|
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position.
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|
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Parameters: ~
|
|
{opts} table|nil Configuration table with the same
|
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keys as |vim.lsp.util.open_floating_preview()|
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in addition to the following:
|
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• namespace: (number) Limit diagnostics to the
|
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given namespace
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• severity: See |diagnostic-severity|.
|
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• show_header: (boolean, default true) Show
|
|
"Diagnostics:" header
|
|
• source: (string) Include the diagnostic
|
|
source in the message. One of "always" or
|
|
"if_many".
|
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• format: (function) A function that takes a
|
|
diagnostic as input and returns a string.
|
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The return value is the text used to display
|
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the diagnostic.
|
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{bufnr} number|nil Buffer number. Defaults to the
|
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current buffer.
|
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{position} table|nil The (0,0)-indexed position. Defaults
|
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to the current cursor position.
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|
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Return: ~
|
|
tuple ({popup_bufnr}, {win_id})
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|
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toqflist({diagnostics}) *vim.diagnostic.toqflist()*
|
|
Convert a list of diagnostics to a list of quickfix items that
|
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can be passed to |setqflist()| or |setloclist()|.
|
|
|
|
Parameters: ~
|
|
{diagnostics} table List of diagnostics
|
|
|diagnostic-structure|.
|
|
|
|
Return: ~
|
|
array of quickfix list items |setqflist-what|
|
|
|
|
vim:tw=78:ts=8:ft=help:norl:
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