Move certain section information above another section in a configuration file

I have a requirement to move all the sections and its values present below [mysqld] to above it in a mysql configuration file and after moving those contents they need to be deleted,I have tried the below script but it is just adding variable name instead of the contents and deletes the contents,Can anyone help resolve it or it would be appreciated if i get code to automatically move the sections and its content present below [mysqld] to the top of [mysqld] section

output:

[client]
a=99

${value}
[mysqld]
b=1
c=2

script:

#!/bin/bash
FILENAME='my.cnf'
LINE_NUMBER1=$1
LINE_NUMBER2=$2
declare -a LINE_CONTENT=$(sed -n "${LINE_NUMBER1},${LINE_NUMBER2}"p "$FILENAME")
sed -i "${LINE_NUMBER1},${LINE_NUMBER2}"'d' "$FILENAME"
for value in "${LINE_CONTENT[@]}"; do
sed -i "/^#/n;/\[mysqld]/i ${value}" "$FILENAME"
done

Current file:my.cnf

[client]
a=99

[mysqld]
b=1
c=2

[myisamchk]
a=1,2
d=22
e=name

[sst]
f=yes

Expected after script execution

[client]
a=99

[myisamchk]
a=1,2
d=22
e=name

[sst]
f=yes

[mysqld]
b=1
c=2

Actual my.cnf:

[mysqld]
disable-log-bin = 1
----GAPS----
skip-name-resolve = 1
performance-schema = 0
local-infile = 0
mysqlx = 0
open_files_limit = 200000
max_allowed_packet = 256M
sql_mode="NO_ENGINE_SUBSTITUTION"
-----GAPS------
innodb_dedicated_server = 1
innodb_buffer_pool_instances = 48


[myisamck]
a=3
b=4

result is:

only the below is being copied below [myisamchk] if there are gaps,if there are no gaps then it works fine:

[mysqld]
disable-log-bin = 1

ed to the rescue:

ed -s my.cnf <<'EOF'
/^\[mysqld\]$/;/^$/m$
?\[mysqld\]?i

.
w
EOF

First find the block starting with the line [mysqld] and ending with the next blank line, move it to the end of the file, and make sure to insert a blank line before it so it doesn't blend into the previous final block, then write the changed file back out.

Here's a (somewhat lengthy) SED script that might do the job.

#! /bin/sh

MOVE_SECTION='mysqld'
AFTER_SECTION='sst'


SED_SCRIPT="$(cat <<-_EOF_
#n
/^\[/!{p;b}

/^\[${MOVE_SECTION}\]/{
  :hold
  H
  n
  /^\[/!b hold
  }

/^\[${AFTER_SECTION}/!{p;b}
:loop
p
$b append
n
/^\[/!b loop
H

:append
x
p

_EOF_
)"

sed -e "$SED_SCRIPT" INPUTFILE

Given the following input:

[client]

a=99

b=101


[mysqld]
blah=this

b=1

c=2


[myisamchk]

a=1,2

d=22

e=name

[sst]

f=yes
this=that

[other]
blah=1

blih=2

bloh=3

... it should produce:

[client]

a=99

b=101


[myisamchk]

a=1,2

d=22

e=name

[sst]

f=yes
this=that


[mysqld]
blah=this

b=1

c=2


[other]
blah=1

blih=2

bloh=3

Let me know if it needs adjustments.

HTH

Edit:

Removed "foundSection" loop (unneeded).