Please add more options (e.g. hidden) to the ui about deadgrep HOT 16 OPEN

(setq deadgrep-search-hidden t)

(defconst modi/deadgrep--rg-args
  `("--color=ansi"
    "--line-number"
    "--no-heading"
    "--with-filename"
    "--no-ignore-vcs"       ;Ignore files/dirs ONLY from `.ignore'
    "--follow"              ;Follow symlinks
    "%s"                    ;--fixed-strings and/or --word-regexp
    "%s"          ;--smart-case / --case-sensitive / --ignore-case
    "%s"          ;file type
    "%s"          ;context
    "--ignore-file" ,(expand-file-name ".ignore" (getenv "HOME")))
  "rg arguments used in the `deadgrep' package.")

;; Thu Aug 23 15:51:37 EDT 2018 - kmodi
;; Overriding the original `deadgrep--format-command' as I need to
;; add few extra `rg' options.
;; https://github.com/Wilfred/deadgrep/issues/24
(defun modi/deadgrep--format-command (search-term search-type case context)
  "Return a command string that we can execute in a shell
to obtain ripgrep results."
  (format
   (mapconcat #'identity
              (append '("%s")       ;`deadgrep-executable'
                      modi/deadgrep--rg-args
                      '("-- %s .")) ;search term
              " ")
   deadgrep-executable
   (cond
    ((eq search-type 'string)
     "--fixed-strings")
    ((eq search-type 'words)
     "--fixed-strings --word-regexp")
    ((eq search-type 'regexp)
     "")
    (t
     (error "Unknown search type: %s" search-type)))
   (cond
    ((eq case 'smart)
     "--smart-case")
    ((eq case 'sensitive)
     "--case-sensitive")
    ((eq case 'ignore)
     "--ignore-case")
    (t
     (error "Unknown case: %s" case)))
   ;; TODO: pass this as an argument.
   (cond
    ((eq deadgrep--file-type 'all)
     "")
    ((eq (car-safe deadgrep--file-type) 'type)
     (format "--type %s" (cdr deadgrep--file-type)))
    ((eq (car-safe deadgrep--file-type) 'glob)
     (format "--type-add 'custom:%s' --type custom"
             (cdr deadgrep--file-type)))
    (t
     (error "Unknown file-type: %S" deadgrep--file-type)))
   (if context
       (format "--before-context %s --after-context %s"
               (car context) (cdr context))
     "")
   (shell-quote-argument search-term)))
(advice-add 'deadgrep--format-command :override #'modi/deadgrep--format-command)

(defconst modi/deadgrep--rg-extra-args
  `("--no-ignore-vcs"       ;Ignore files/dirs ONLY from `.ignore'
    "--follow"              ;Follow symlinks
    "--ignore-file" ,(expand-file-name ".ignore" (getenv "HOME")))
  "Extra rg arguments to be added to `deadgrep--format-command' output.")

;; Thu Aug 23 15:51:37 EDT 2018 - kmodi
;; Adding extra arguments to the ones
;; already in `deadgrep--format-command' --
;; https://github.com/Wilfred/deadgrep/issues/24
(defun modi/deadgrep--format-command-advice (orig-ret-val)
  "Add arguments from `modi/deadgrep--rg-extra-args' to ORIG-RET-VAL."
  (replace-regexp-in-string
   (format "\\`\\(%s \\)\\(.*\\)\\'" (regexp-quote deadgrep-executable))
   (concat "\\1"
           (mapconcat #'identity modi/deadgrep--rg-extra-args " ")
           " \\2")
   orig-ret-val))
(advice-add 'deadgrep--format-command :filter-return #'modi/deadgrep--format-command-advice)

(defun deadgrep--include-args (rg-args)
  (push "--hidden" rg-args) ;; consider hidden folders/files
  (push "--follow" rg-args) ;; follow symlink
  )

(advice-add 'deadgrep--arguments :filter-return #'deadgrep--include-args)