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* lisp/simple.el (shell-command-not-erase-buffer): New option to allow not erasing the output buffer between shell commands. Defaults to nil. (shell-command-on-region): Use it. (shell-command--save-pos-or-erase): New defun; store a buffer position if 'shell-command-not-erase-buffer' is non-nil; otherwise erase the output buffer of the shell command. (shell-command, shell-command-on-region): Use it. (shell-command--set-point-after-cmd): New defun; if 'shell-command-not-erase-buffer' is non-nil, set point in the output buffer to the position in 'shell-command-saved-pos'. (shell-command-sentinel, shell-command-on-region): Use it. * doc/emacs/misc.texi (shell-command-not-erase-buffer): Document this feature in the manual. ; * etc/NEWS: Add entry for this new feature. See discussion on: http://lists.gnu.org/archive/html/emacs-devel/2016-07/msg00610.html |
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