在emacs中搜索并替换字符序列

Question

I am using Emacs, and I have a file with some strings like this..

IMPORTED_DATA_K_NAME
IMPORTED_DATA_L_PHONE
IMPORTED_DATA_M_URL

I want to change the contents to ..

IMPORTED_DATA_A_NAME
IMPORTED_DATA_B_PHONE
IMPORTED_DATA_C_URL

Basically change _K_ to _A_ and _L_ to _B_ and so on..

This is a rather large file with lot of repetitions. I was looking at query-replace-regex but was not sure if that accomplishes this or is there a better way to accomplish this change.

Any help is appreciated.

Answer 1

CM-% or Mx query-replace-regexp with the regexp _\\([KZ]\\)_ and the replacement _\\,(char-to-string (- (string-to-char \\1) 10))_ . \\,(expr) in the replacement evaluates (expr) as lisp.