AK2: add remove_section, update documentation with note regarding escapes

README

@@ -33,6 +33,7 @@ dump_boot
 backup_file <file>
 replace_string <file> <if search string> <original string> <replacement string>
 replace_section <file> <begin search string> <end search string> <replacement string>
+remove_section <file> <begin search string> <end search string>
 insert_line <file> <if search string> <before|after> <line match string> <inserted line>
 replace_line <file> <line replace string> <replacement line>
 remove_line <file> <line match string>
@@ -53,6 +54,8 @@ Similarly, "line match string" and "line replace string" are the search strings
 
 You may also use ui_print "<text>" to write messages back to the recovery during the modification process.
 
+Note: the "begin search string" and "end search string" arguments of replace_section and remove_section require any forward slashes (/) to be escaped.
+
 // Instructions
 
 1- Place zImage in the root (dtb should also go here for devices that require a custom one, both will fallback to the original if not included)

anykernel.sh

@@ -115,6 +115,11 @@ replace_section() {
   sed -i "${line}s;^;${4}\n;" $1;
 }
 
+# remove_section <file> <begin search string> <end search string>
+remove_section() {
+  sed -i "/${2}/,/${3}/d" $1;
+}
+
 # insert_line <file> <if search string> <before|after> <line match string> <inserted line>
 insert_line() {
   if [ -z "$(grep "$2" $1)" ]; then