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Warnings: Track variable references in &-expansions
authorIan Jackson <ijackson@chiark.greenend.org.uk>
Sat, 28 Dec 2019 12:31:40 +0000 (12:31 +0000)
committerIan Jackson <ijackson@chiark.greenend.org.uk>
Mon, 30 Dec 2019 11:35:16 +0000 (11:35 +0000)
commit1717ef2f361a5da97bb6019b92da4a4ab7fb9487
treec9ef345737ef31f8d2557be5db291a1344470e69tree | snapshot
parent4d32a95729b7ae70fc1b65017cd26d22707ea33dcommit | diff
Warnings: Track variable references in &-expansions

For &-escapes which match the whole variable name, we can conveniently
track variable expansions as part of the processing.  (We don't change
any of the matching regexps.)

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
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