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| author | Jeff King <peff@peff.net> | 2008-03-12 17:29:57 -0400 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2008-03-12 21:10:00 -0700 |
| commit | 40a7ce64e146c79a966a8494d3a7e85826d7f4e9 (patch) | |
| tree | 3349632b86ba74d796700a57a8bae16386ebbfc2 /t/t4022-diff-rewrite.sh | |
| parent | a6828f536119c3288b0be772e3870f1a464d017d (diff) | |
| download | git-40a7ce64e146c79a966a8494d3a7e85826d7f4e9.tar.gz | |
tr portability fixes
Specifying character ranges in tr differs between System V
and POSIX. In System V, brackets are required (e.g.,
'[A-Z]'), whereas in POSIX they are not.
We can mostly get around this by just using the bracket form
for both sets, as in:
tr '[A-Z] '[a-z]'
in which case POSIX interpets this as "'[' becomes '['",
which is OK.
However, this doesn't work with multiple sequences, like:
# rot13
tr '[A-Z][a-z]' '[N-Z][A-M][n-z][a-m]'
where the POSIX version does not behave the same as the
System V version. In this case, we must simply enumerate the
sequence.
This patch fixes problematic uses of tr in git scripts and
test scripts in one of three ways:
- if a single sequence, make sure it uses brackets
- if multiple sequences, enumerate
- if extra brackets (e.g., tr '[A]' 'a'), eliminate
brackets
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t4022-diff-rewrite.sh')
| -rwxr-xr-x | t/t4022-diff-rewrite.sh | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/t/t4022-diff-rewrite.sh b/t/t4022-diff-rewrite.sh index 6de4acbd44..bf996fc414 100755 --- a/t/t4022-diff-rewrite.sh +++ b/t/t4022-diff-rewrite.sh @@ -8,7 +8,10 @@ test_expect_success setup ' cat ../../COPYING >test && git add test && - tr 'a-zA-Z' 'n-za-mN-ZA-M' <../../COPYING >test + tr \ + "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" \ + "nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM" \ + <../../COPYING >test ' |