Reformat shell scripts with shfmt

All changes in this commit were automated using the command:

  shfmt -w -i 2 -ci -bn . $(find . -name "*.sh.in")

By default, only *.sh and files without extension are checked, so
*.sh.in files have to be added additionally. (See mvdan/sh#944)

util/tabify-changes

@@ -11,25 +11,25 @@
 # See the COPYRIGHT file distributed with this work for additional
 # information regarding copyright ownership.
 
-expand ${1} |
-sed \
--e 's/^\([1-9][0-9][0-9][0-9][0-9][0-9]\.\) */\1	/' \
--e 's/^\([1-9][0-9][0-9][0-9][0-9]\.\) */\1	/' \
--e 's/^\([1-9][0-9][0-9][0-9]\.\) */\1	/' \
--e 's/^\( [1-9][0-9][0-9]\.\) */\1	/' \
--e 's/^\(  [1-9][0-9]\.\) */\1	/' \
--e 's/^\(   [1-9]\.\) */\1	/' \
--e 's/\(	\[.\]\) */\1		/' \
--e 's/\(	\[..\]\) */\1		/' \
--e 's/\(	\[...\]\) */\1		/' \
--e 's/\(	\[....\]\) */\1		/' \
--e 's/\(	\[.....\]\) */\1		/' \
--e 's/\(	\[......\]\) */\1	/' \
--e 's/\(	\[.......\]\) */\1	/' \
--e 's/\(	\[........\]\) */\1	/' \
--e 's/\(	\[.........\]\) */\1	/' \
--e 's/\(	\[..........\]\) */\1	/' \
--e 's/\(	\[...........\]\) */\1	/' \
--e 's/\(	\[............\]\) */\1	/' \
--e 's/[ 	]*$//' |
-unexpand
+expand ${1} \
+  | sed \
+    -e 's/^\([1-9][0-9][0-9][0-9][0-9][0-9]\.\) */\1	/' \
+    -e 's/^\([1-9][0-9][0-9][0-9][0-9]\.\) */\1	/' \
+    -e 's/^\([1-9][0-9][0-9][0-9]\.\) */\1	/' \
+    -e 's/^\( [1-9][0-9][0-9]\.\) */\1	/' \
+    -e 's/^\(  [1-9][0-9]\.\) */\1	/' \
+    -e 's/^\(   [1-9]\.\) */\1	/' \
+    -e 's/\(	\[.\]\) */\1		/' \
+    -e 's/\(	\[..\]\) */\1		/' \
+    -e 's/\(	\[...\]\) */\1		/' \
+    -e 's/\(	\[....\]\) */\1		/' \
+    -e 's/\(	\[.....\]\) */\1		/' \
+    -e 's/\(	\[......\]\) */\1	/' \
+    -e 's/\(	\[.......\]\) */\1	/' \
+    -e 's/\(	\[........\]\) */\1	/' \
+    -e 's/\(	\[.........\]\) */\1	/' \
+    -e 's/\(	\[..........\]\) */\1	/' \
+    -e 's/\(	\[...........\]\) */\1	/' \
+    -e 's/\(	\[............\]\) */\1	/' \
+    -e 's/[ 	]*$//' \
+  | unexpand