When a symlink name has no recognizable extension (e.g. Aliases/0install),
syntax detection fails because the symlink path doesn't match any syntax.
The target file may have a recognizable extension (e.g. Formula/zero-install.rb)
but was never consulted.
When path-based syntax detection fails with UndetectedSyntax, canonicalize
the path to resolve symlinks and retry detection with the target path.
This preserves existing behavior where the symlink path itself matches
(e.g. .ssh/config), since the original path is tried first.
Closes#1001
When BAT_CONFIG_DIR is set to the system config directory (e.g. /etc/bat),
both system_config_file() and config_file() resolve to /etc/bat/config.
The config file was read twice, causing clap errors for non-repeatable flags
like --italic-text.
Skip the user config read when it resolves to the same file as the system
config, using canonicalization to also handle symlinks.
Closes#3589
* feat(cli): add fallback syntax option
Expose a new fallback syntax CLI option so users can opt into syntax highlighting only when auto-detection fails.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
* feat(syntax): apply fallback only after detection fails
Use the fallback syntax only when path and first-line detection fail, preserving existing behavior for detected files and explicit language selection.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
* test(cli): cover fallback syntax behavior
Add integration coverage for fallback syntax usage, precedence with --language, and no-op behavior when syntax is already detected; update help snapshots for the new option.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
* docs(changelog): document fallback syntax option
Record the new fallback syntax feature in the unreleased changelog section.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
---------
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Rizky Mirzaviandy Priambodo