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go/ast: document that ast.FilterFile always filters imports

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Fixes #9248.

Change-Id: Id1c50af5eb35d7720b8f0a4d4881414baf061d56
Reviewed-on: https://go-review.googlesource.com/3241
Reviewed-by: Alan Donovan <adonovan@google.com>
This commit is contained in:
Robert Griesemer 2015-01-23 11:45:00 -08:00
parent c8d7d0d9f1
commit 571d02d9fe
1 changed files with 2 additions and 2 deletions
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4
src/go/ast/filter.go
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@ -221,8 +221,8 @@ func filterDecl(decl Decl, f Filter, export bool) bool {
// names from top-level declarations (including struct field and
// interface method names, but not from parameter lists) that don't
// pass through the filter f. If the declaration is empty afterwards,
// the declaration is removed from the AST. The File.Comments list
// is not changed.
// the declaration is removed from the AST. Import declarations are
// always removed. The File.Comments list is not changed.
//
// FilterFile returns true if there are any top-level declarations
// left after filtering; it returns false otherwise.