More flexible grepping with deadgrep
I seem to be grepping a lot recently and I think the way I use
deadgrep can be improved a little.
deadgrep defaults to a recursive
ripgrep from the
default-directory which is generally the current directory of the buffer, but I find that by default I tend to mostly want to grep from a top level directory (yes I know, almost like a project!).
I would like to have a typical Find All References type of functionality from my grepping and not to rely on
xref as I will not necessarily ever know if any
xref functionality is supported for any file that I am working on and for the moment I am not using any connection to an LSP server. I would like a simple generic process that can be used across all files and I think
deadgdrep can help me out with this.
I would like to bind to
S-f12 to grep from the “project” top level with the search set to whatever string is under my cursor; this should enable a quick workflow involving jumping around files within the top level directory structure bouncing back and forth between the
I have chosen the binding of
S-f12 for consistency across IDEs as I am often required to use VSCode and Visual Studio for work.
In addition I would like to replace my usual local directory grepping where I use
deadgrep for a more unified approach.
So I created the following two functions:
(defun my/deadgrep () (interactive) (if (equal major-mode 'dired-mode) (setq search-term (read-from-minibuffer "Search : ")) (setq search-term (read-from-minibuffer "Search : " (thing-at-point 'symbol))) ) (deadgrep search-term home-dir) )
(defun my/grep () (interactive) (if (equal major-mode 'dired-mode) (setq search-term (read-from-minibuffer "Search : ")) (setq search-term (read-from-minibuffer "Search : " (thing-at-point 'symbol))) ) (deadgrep search-term) )
home-dir as you might guess is where my top level directory resides.
I came to realise that when I am in a
dired buffer I don’t actually ever want to grep with the string under the cursor (which of course would most likely be a file or directory) but only when I am in a file.
I toyed around with the idea of having a single (interactive “p”) function so it would accept a prefix command and then perform the following kind of logic:
((equal current-prefix-arg nil) ; no C-u (do top level grep)) ((equal current-prefix-arg '(4)) ; C-u (do local grep)) ((equal current-prefix-arg 1) ; C-u 1 (do some other grepping))
however this had the unintended consequence of pushing through the prefix command to
deadgrep and therefore it would not start immediately but wait for user interaction. I couldn’t see a way round this so had to split my grepping into both a
M-f12 for each function call; not much of a big deal.
As I am just running a single deadgrep instance using:
(setq deadgrep-max-buffers 1)
I also needed to add the following as I will always want to kill the current process if I am starting a new one.
(setq kill-buffer-query-functions nil)