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## Implicit/internal field names
When [plugin meta data](wiki/Plugin+Meta+Data) comments get extracted into a hashtable, some common attributes might get prepoulated. Either implied from the filename, or from predefined defaults.
## # id: basename
With e.g. the [depends:](wiki/depends) field plugins can reference each other. And they typically just list basenames, not full paths. Because the point of PMD is to abstract filenames from plugin names.
# fn: src/plugin/featurename.rb
# id: featurename
Albeit one could use a literal `# id:` override in scripts, it's probably best to avoid ambigious basenames. For the scope of one application API all plugin basenames should be unique.
## # fn: .../src/plugin/filename.rb
When a script gets parsed, it's often necessary to retain its exact location. For brevity, I'd usually storel this in an internal field named `$meta.fn`
## # comment:
The remainder of the topmost comment block (after all PMD key:value fields) is meant to contain a longer [description](wiki/description). And for my implementatiosn I usually keep it as `$meta.comment` (albeit also used `$meta.doc` in some extractors.)
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