问题
I am trying to figure out a way to replace a string in a text file by a number that increments by more than 1. I am trying to turn a couple of lines like this:
result_A_in_S1-S2.txt
result_A_in_S1-S2.txt
result_A_in_S1-S2.txt
result_A_in_S1-S2.txt
Into something that scales up sequentially for S1 and S2.
result_A_in_1000-1003.txt
result_A_in_1004-1007.txt
result_A_in_1008-1011.txt
result_A_in_1012-1015.txt
I want to know if I can define a string with replace regexp and then have that string be replaced with some starting number, and as it finds the next occurrence of string, it replaces with starting number + chosen increment.
I am just now starting learn Emacs and am pretty unfamiliar with it.
回答1:
Yes, you can do that with [query-]replace-regexp in Emacs, by evaluating elisp in your replacement, and utilising the zero-based replacement counter \#. e.g.:
M-x
query-regexp-replace
RET
S1-S2
RET\,(let ((start (+ 1000 (* 4 \#)))) (format "%d-%d" start (+ start 3)))
RET
来源：https://stackoverflow.com/questions/49519627/emacs-replace-regexp-with-incremental-sequence