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unifdef: update to upstream version 2.5

Fix a long-standing cpp compatibility bug. The -DFOO argument
(without an explicit value) should define FOO to 1 not to the empty

Add a -o option to support overwriting a file in place, and a -S
option to list the nesting depth of symbols. Include line numbers
in debugging output. Support CRLF newlines.

Signed-off-by: Tony Finch <>
Signed-off-by: Michal Marek <>
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1 parent c56eb8f commit 3cbea4366f17dcb22f3bf5f253eeb86b622d24d0 @fanf2 fanf2 committed with michal42 Jan 18, 2011
Showing with 184 additions and 63 deletions.
  1. +184 −63 scripts/unifdef.c
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