I'm trying to modify a series of binary files made with a legacy
program, and need to change a certain character in my search string to
the character with hex code +4. For context, here is my sed regex:
:s!^@Heading level 1^@\+.\{-}^@\+\(\d\+\)^@\+Body text^@vel 1^@\+\(\_.
\{1}\)[^D^A^@]\+!^@Body text^@vel 2^@^@\2^@^@^Y#\1^Z
with HEX(^@) =00, etc. String 2 is only 1 character long, but is
occasionally rendered as a carriage return, thus the need for the \_.
\{1} pattern. Instead of writing the exact character of string 2, I
need to write the character +4 to its hex code. For instance, if
HEX(string2)=97, I would need to print ASCII(9b).
Any ideas on how to do this?
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