AK2: simplify new contains(), adjust placement, and update documentation

README

@@ -52,7 +52,7 @@ Similarly, "line match string" and "line replace string" are the search strings
 
 "block|mount|fstype|options|flags" requires you specify which part (listed in order) of the fstab entry you want to check and alter.
 
-You may also use ui_print "<text>" to write messages back to the recovery during the modification process.
+You may also use ui_print "<text>" to write messages back to the recovery during the modification process, and contains "<string>" "<substring>" to simplify string testing logic you might want in your script.
 
 Note: the "begin search string" and "end search string" arguments of replace_section and remove_section require any forward slashes (/) to be escaped.
 

anykernel.sh

@@ -31,8 +31,13 @@ chmod -R 755 $bin;
 mkdir -p $ramdisk $split_img;
 
 OUTFD=/proc/self/fd/$1;
+
+# ui_print <text>
 ui_print() { echo -e "ui_print $1\nui_print" > $OUTFD; }
 
+# contains <string> <substring>
+contains() { test "${1#*$2}" != "$1" && return 0 || return 1; }
+
 # dump boot and extract ramdisk
 dump_boot() {
   dd if=$block of=/tmp/anykernel/boot.img;
@@ -50,11 +55,6 @@ dump_boot() {
   cp -af /tmp/anykernel/rdtmp/* $ramdisk;
 }
 
-# contains <string> <substring>
-contains() {
-  if test "${1#*$2}" != "$1"; then return 0; else return 1; fi;
-}
-
 # repack ramdisk then build and write image
 write_boot() {
   cd $split_img;