sed script for converting gcc intel asm to nasm

sed \
    `#########################################################` \
    `###### Rename statements to their Nasm equivalents ######` \
-e 's|\.string|db|g'    `# .string lines are essentially combination bytes              ` \
-e 's|\.byte|db|g'  `# .byte data is just... a byte                         ` \
-e 's|\.long|dd|g'  `# .long data is double                             ` \
-e 's|\.zero|resb|g'    `# gcc puts .zero lines where a byte should be reserved - not sure      ` \
-e 's|\.align|align|g'  `# align works the same way in gcc and nasm                 ` \
-e 's|\.L|L|g'      `# Labels in gcc,s intel syntax start with .L - remove the dot for simplicity   ` \
-e 's|main|_start|g'    `# If we are going to use ld for linking, _start should be the entry point  ` \
    `###################################`\
    `###### Pointer modifications ######`\
-e 's|PTR ||g'          `# Pointers in nasm dont need the word PTR` \
-e 's|OFFSET FLAT:|dword |g'    `# Nasm doesnt understand flat pointers. They are same as double ptrs` \
    `# Pointers in Nasm require [] around them  `\
    `# For example, convert             `\
    `#      ....QWORD player+40     `\
    `# to                       `\
    `#      ....QWORD [player+40]       `\
-e 's|BYTE \([a-zA-Z][a-zA-Z0-9+\._]*\)|BYTE \[\1\]|g' \
-e 's|QWORD \([a-zA-Z][a-zA-Z0-9+\._]*\)|QWORD \[\1\]|g' \
-e 's|DWORD \([a-zA-Z][a-zA-Z0-9+\._]*\)|DWORD \[\1\]|g' \
    `###############################################################`\
    `###### Remove lines which contain the following patterns ######`\
-e '/^\t\.cfi/d' \
-e '/^\t\.local/d' \
-e '/^\t\.file/d' \
-e '/^\t\.intel_syntax/d' \
-e '/^\t\.globl/d' \
-e '/^\t\.size/d' \
-e '/^\t\.type/d' \
-e '/^\t\.ident/d' \
-e '/^LFE/d' `# Labels starting with LFE and LFB are not used anywhere in the file. Why bother?`\
-e '/^LFB/d' \
-e '/\.note/d' \
    `############################################################` \
    `###### Rename st* registers to their Nasm equivalents ######` \
-e 's|st(0)|st0|g'  \
-e 's|st(1)|st1|g' \
-e 's|st(2)|st2|g' \
-e 's|st(3)|st3|g' \
-e 's|st(4)|st4|g' \
-e 's|st(5)|st5|g' \
-e 's|st(6)|st6|g' \
-e 's|st,|st0,|g' \
-e 's|st$|st0|g' \
    `#############################################################`\
    `###### Rename .comm lines to their nasm equivalent ######`\
    `###### For example, convert                ######`\
    `######    .comm    time_old.15416,8,8      ######`\
    `###### to                      ######`\
    `######    common   ret_val.15417 8:8       ######`\
-e 's|^\t.comm\(.*\),\([0-9]\),\([0-9]\)|\tcommon \1 \2:\3|g'  \
main.intel-gcc.s > main.nasm