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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>
maint
Jeff King 17 years ago committed by Junio C Hamano
parent
commit
40a7ce64e1
  1. 4
      git-bisect.sh
  2. 4
      git-filter-branch.sh
  3. 5
      t/t4022-diff-rewrite.sh
  4. 2
      t/t7003-filter-branch.sh

4
git-bisect.sh

@ -293,14 +293,14 @@ bisect_next() { @@ -293,14 +293,14 @@ bisect_next() {
bisect_next_check good

skip=$(git for-each-ref --format='%(objectname)' \
"refs/bisect/skip-*" | tr '[\012]' ' ') || exit
"refs/bisect/skip-*" | tr '\012' ' ') || exit

BISECT_OPT=''
test -n "$skip" && BISECT_OPT='--bisect-all'

bad=$(git rev-parse --verify refs/bisect/bad) &&
good=$(git for-each-ref --format='^%(objectname)' \
"refs/bisect/good-*" | tr '[\012]' ' ') &&
"refs/bisect/good-*" | tr '\012' ' ') &&
eval="git rev-list --bisect-vars $BISECT_OPT $good $bad --" &&
eval="$eval $(cat "$GIT_DIR/BISECT_NAMES")" &&
eval=$(filter_skipped "$eval" "$skip") &&

4
git-filter-branch.sh

@ -58,8 +58,8 @@ eval "$functions" @@ -58,8 +58,8 @@ eval "$functions"
# "author" or "committer

set_ident () {
lid="$(echo "$1" | tr "A-Z" "a-z")"
uid="$(echo "$1" | tr "a-z" "A-Z")"
lid="$(echo "$1" | tr "[A-Z]" "[a-z]")"
uid="$(echo "$1" | tr "[a-z]" "[A-Z]")"
pick_id_script='
/^'$lid' /{
s/'\''/'\''\\'\'\''/g

5
t/t4022-diff-rewrite.sh

@ -8,7 +8,10 @@ test_expect_success setup ' @@ -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

'


2
t/t7003-filter-branch.sh

@ -4,7 +4,7 @@ test_description='git-filter-branch' @@ -4,7 +4,7 @@ test_description='git-filter-branch'
. ./test-lib.sh

make_commit () {
lower=$(echo $1 | tr A-Z a-z)
lower=$(echo $1 | tr '[A-Z]' '[a-z]')
echo $lower > $lower
git add $lower
test_tick

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