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docs: add a migration guide for the format string changes (#1624)
* Start writing migration guide * Add prefix/suffix migration to guide * Update docs/migrating-to-0.45.0/README.md Co-authored-by: Thomas O'Donnell <andytom@users.noreply.github.com> * Update docs/migrating-to-0.45.0/README.md Co-authored-by: Thomas O'Donnell <andytom@users.noreply.github.com> * Add missing quote * Detail the modules affected by the change * Document character and time migration Co-authored-by: Thomas O'Donnell <andytom@users.noreply.github.com>
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Matan Kushner
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docs/migrating-to-0.45.0/README.md
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# Migrating to v0.45.0
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Starship v0.45.0 is a release containing breaking changes, in preparation for the big v1.0.0. We have made some major changes around how configuration is done on the prompt, to allow for a greater degree of customization.
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This guide is intended to walk you through the breaking changes.
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## `prompt_order` has been replaced by a root-level `format`
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Previously to v0.45.0, `prompt_order` would accept an array of module names
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in the order which they should be rendered by Starship.
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Starship v0.45.0 will instead be accepting a `format` value, allowing for customization of the prompt outside of the modules themselves.
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**Example pre-v0.45.0 configuration**
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```toml
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prompt_order = [
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"username",
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"hostname",
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"directory",
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"git_branch",
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"git_commit",
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"git_state",
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"git_status",
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"cmd_duration",
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"custom",
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"line_break",
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"jobs",
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"battery",
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"time",
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"character",
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]
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```
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**Example v0.45.0 configuration**
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```toml
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format = """\
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$username\
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$hostname\
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$directory\
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$git_branch\
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$git_commit\
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$git_state\
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$git_status\
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$cmd_duration\
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$custom\
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$line_break\
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$jobs\
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$battery\
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$time\
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$character\
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"""
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```
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## Module `prefix` and `suffix` will be replaced by `format`
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Previously to v0.45.0, some modules would accept `prefix` and/or `suffix`
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in order to stylize the way that modules are rendered.
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Starship v0.45.0 will instead be accepting a `format` value, allowing for further
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customization of how modules are rendered. Instead of defining a prefix and suffix
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for the context-based variables, the variables can now be substituted from within
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a format string, which represents the module's output.
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**Example pre-v0.45.0 configuration**
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```toml
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[cmd_duration]
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prefix = "took "
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```
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**Example v0.45.0 configuration**
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```toml
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[cmd_duration]
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# $duration – The command duration (e.g. "15s")
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# $style – The default style of the module (e.g. "bold yellow")
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format = "took [$duration]($style)"
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```
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### Affected Modules
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#### Character
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| Deprecated Property | Replacement |
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| ----------------------- | ---------------- |
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| `symbol` | `success_symbol` |
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| `use_symbol_for_status` | `error_symbol` |
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| `style_success` | `success_symbol` |
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| `style_failure` | `error_symbol` |
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**Changes to the Default Configuration**
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```diff
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[character]
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-- symbol = "❯"
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-- error_symbol = "✖"
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-- use_symbol_for_status = true
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-- vicmd_symbol = "❮"
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++ success_symbol = "[❯](bold green) "
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++ error_symbol = "[❯](bold red) "
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++ vicmd_symbol = "[❮](bold green)"
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```
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Previously, the `use_symbol_for_status` property was used to configure the prompt to show the `error_symbol` when the last command resulted in a non-zero status code.
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With the release of v0.45.0, we now always use `error_symbol` after non-zero status codes, unifying `use_symbol_for_status` and `error_symbol` properties.
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To configure the prompt to use the older `use_symbol_for_status = true` configuration, add the following to your config file:
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```toml
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[character]
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error_symbol = "[✖](bold red) "
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```
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#### Command Duration
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| Deprecated Property | Replacement |
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| ------------------- | ----------- |
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| `prefix` | `format` |
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**Changes to the Default Configuration**
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```diff
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[cmd_duration]
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-- prefix = "took "
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++ format = "took [$duration]($style)"
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```
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#### Directory
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| Deprecated Property | Replacement |
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| ------------------- | ----------- |
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| `prefix` | `format` |
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**Changes to the Default Configuration**
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```diff
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[cmd_duration]
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-- prefix = "in "
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++ format = "[$path]($style)[$lock_symbol]($lock_style)"
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```
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#### Environment Variable
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| Deprecated Property | Replacement |
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| ------------------- | ----------- |
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| `prefix` | `format` |
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| `suffix` | `format` |
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**Changes to the Default Configuration**
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```diff
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[cmd_duration]
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-- prefix = ""
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-- suffix = ""
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++ format = "with [$env_value]($style) "
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```
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#### Git Commit
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| Deprecated Property | Replacement |
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| ------------------- | ----------- |
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| `prefix` | `format` |
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| `suffix` | `format` |
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**Changes to the Default Configuration**
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```diff
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[cmd_duration]
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-- prefix = "("
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-- suffix = ")"
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++ format = "[\\($hash\\)]($style) "
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```
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#### Git Status
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| Deprecated Property | Replacement |
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| ------------------- | ----------- |
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| `prefix` | `format` |
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| `suffix` | `format` |
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**Changes to the Default Configuration**
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```diff
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[cmd_duration]
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-- prefix = "["
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-- suffix = "]"
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++ format = "([$all_status$ahead_behind] )"
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```
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#### Hostname
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| Deprecated Property | Replacement |
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| ------------------- | ----------- |
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| `prefix` | `format` |
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| `suffix` | `format` |
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**Changes to the Default Configuration**
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```diff
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[cmd_duration]
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-- prefix = ""
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-- suffix = ""
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++ format = "[$hostname]($style) in "
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```
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#### Singularity
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| Deprecated Property | Replacement |
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| ------------------- | ----------- |
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| `label` | `format` |
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| `prefix` | `format` |
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| `suffix` | `format` |
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**Changes to the Default Configuration**
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```diff
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[cmd_duration]
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-- prefix = ""
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-- suffix = ""
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++ format = "[$symbol\\[$env\\]]($style) "
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```
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#### Time
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| Deprecated Property | Replacement |
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| ------------------- | ------------- |
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| `format` | `time_format` |
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**Changes to the Default Configuration**
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```diff
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[time]
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-- format = "🕙[ %T ]"
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++ time_format = "%T"
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++ format = "at 🕙[$time]($style)
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```
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#### Custom Commands
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| Deprecated Property | Replacement |
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| ------------------- | ----------- |
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| `prefix` | `format` |
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| `suffix` | `format` |
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**Changes to the Default Configuration**
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```diff
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[cmd_duration]
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-- prefix = ""
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-- suffix = ""
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++ format = "[$symbol$output]($style) "
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```
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