howto-index.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 sed -i 's@`\(.*\)`@$(\1)@g' ${_f} done and then carefully proof-read. Signed-off-by: Elia Pinto <gitter.spiros@gmail.com> Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Elia Pinto committed Apr 16, 2014 at 10:29 UTC f25f5e61a7c1a22dd85413d61db639e7c01268f4
1 file changed +6 -6
Documentation/howto-index.sh
+6 -6
@@ -11,8 +11,8 @@ EOF
11
12 for txt
13 do
14 - title=`expr "$txt" : '.*/\(.*\)\.txt$'`
15 - from=`sed -ne '
14 + title=$(expr "$txt" : '.*/\(.*\)\.txt$')
15 + from=$(sed -ne '
16 /^$/q
17 /^From:[ ]/{
18 s///
@@ -21,9 +21,9 @@ do
21 s/^/by /
22 p
23 }
24 - ' "$txt"`
24 + ' "$txt")
25
26 - abstract=`sed -ne '
26 + abstract=$(sed -ne '
27 /^Abstract:[ ]/{
28 s/^[^ ]*//
29 x
@@ -39,11 +39,11 @@ do
39 x
40 p
41 q
42 - }' "$txt"`
42 + }' "$txt")
43
44 if grep 'Content-type: text/asciidoc' >/dev/null $txt
45 then
46 - file=`expr "$txt" : '\(.*\)\.txt$'`.html
46 + file=$(expr "$txt" : '\(.*\)\.txt$').html
47 else
48 file="$txt"
49 fi