a1db8b841
Denys Vlasenko
2010-05-18
Subject
make scripts/gen_build_files.sh standard-clean
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scripts/gen_build_files.sh+8 -5
| @@ -1,7 +1,4 @@ | |
| #!/bin/sh | |
| - | # bashism: |
| - | # "read -r" without variable name reads line into $REPLY |
| - | # without stripping whitespace. |
| test $# -ge 2 || { echo "Syntax: $0 SRCTREE OBJTREE"; exit 1; } | |
| @@ -18,7 +15,12 @@ find -type d | while read -r d; do | |
| s=`sed -n 's@^//kbuild:@@p' -- "$srctree/$d"/*.c` | |
| echo "# DO NOT EDIT. This file is generated from Kbuild.src" >"$dst.$$.tmp" | |
| - | while read -r; do |
| + | |
| + | # Why "IFS='' read -r REPLY"?? |
| + | # This atrocity is needed to read lines without mangling. |
| + | # IFS='' prevents whitespace trimming, |
| + | # -r suppresses backslash handling. |
| + | while IFS='' read -r REPLY; do |
| test x"$REPLY" = x"INSERT" && REPLY="$s" | |
| printf "%s\n" "$REPLY" | |
| done <"$src" >>"$dst.$$.tmp" | |
| @@ -38,7 +40,8 @@ find -type d | while read -r d; do | |
| s=`sed -n 's@^//config:@@p' -- "$srctree/$d"/*.c` | |
| echo "# DO NOT EDIT. This file is generated from Config.src" >"$dst.$$.tmp" | |
| - | while read -r; do |
| + | |
| + | while IFS='' read -r REPLY; do |
| test x"$REPLY" = x"INSERT" && REPLY="$s" | |
| printf "%s\n" "$REPLY" | |
| done <"$src" >>"$dst.$$.tmp" | |