test-sha1.sh: use the $( ... ) construct for command substitution

The Git CodingGuidelines prefer the $(...) construct for command substitution instead of using the backquotes `...`. The backquoted form is the traditional method for command substitution, and is supported by POSIX. However, all but the simplest uses become complicated quickly. In particular, embedded command substitutions and/or the use of double quotes require careful escaping with the backslash character. The patch was generated by: for _f in $(find . -name "*.sh") do perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}" done and then carefully proof-read. Signed-off-by: Elia Pinto <gitter.spiros@gmail.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Elia Pinto committed Dec 22, 2015 at 15:10 UTC 21c6f9875a01484875ff17ec472568e1aadceb8f
1 file changed +4 -4
test-sha1.sh
+4 -4
@@ -6,13 +6,13 @@ dd if=/dev/zero bs=1048576 count=100 2>/dev/null |
6 while read expect cnt pfx
7 do
8 case "$expect" in '#'*) continue ;; esac
9 - actual=`
9 + actual=$(
10 {
11 test -z "$pfx" || echo "$pfx"
12 dd if=/dev/zero bs=1048576 count=$cnt 2>/dev/null |
13 perl -pe 'y/\000/g/'
14 } | ./test-sha1 $cnt
15 - `
15 + )
16 if test "$expect" = "$actual"
17 then
18 echo "OK: $expect $cnt $pfx"
@@ -51,14 +51,14 @@ exit
51
52 while read cnt pfx
53 do
54 - actual=`
54 + actual=$(
55 {
56 test -z "$pfx" || echo "$pfx"
57 dd if=/dev/zero bs=1048576 count=$cnt 2>/dev/null |
58 perl -pe 'y/\000/g/'
59 } | sha1sum |
60 sed -e 's/ .*//'
61 - `
61 + )
62 echo "$actual $cnt $pfx"
63 done <<EOF
64 0