extdiff: move external tool command line building into separate function

Authored by ludovicchabant.

Description

extdiff: move external tool command line building into separate function

Details

Committed
ludovicchabantJan 10 2019, 11:22 PM
Parents
rHGc339a01acd9a: test: explicit a rebase source in test-rebase-collapse.t
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