🚀 go-pugleaf

Kai Grossjohann wrote:
> 
> >>>>> Ilya  writes:
> 
>   Ilya>  will delete to and including "A" character on a line in the
>   Ilya>  command mode. How do I do the same thing globally - to every
>   Ilya>  line in the file? Is there a simpler solution in emacs or
>   Ilya>  with sed?
> 
> Emacs:
> 
> M-x query-replace-regexp RET ^[^A]*A RET RET
[snip]

- it's wrong because every line like
bbbbacccc
  will be replaced by
cccc

  If you want to replace first 'A 'in every line (not 'a') then the
best way in Emacs is the following:
M-x  eval-expression RET
(let (case-fold-search)(replace-regexp "\\(^[^A\n]*\\)A" "\\1" nil)) RET

  To replace last 'A':
M-x  eval-expression RET
(let (case-fold-search)(replace-regexp "A\\([^A\n]*$\\)" "\\1" nil)) RET

  To replace all 'A':
M-x  eval-expression RET
(let (case-fold-search)(replace-string "A" "" nil)) RET