sudo apt install built-essential automake autoconf texinfo # optional if they are already installed
git clone https://git.savannah.gnu.org/git/emacs.git
cd emacs && ./configure CFLAGS=-no-pie --without-x --without-dbus --without-sound --with-gnutls=no && make
src/emacs # start emacs

class Working : public Score {
  unsigned check_word(char * word, char * word_end, CheckInfo * ci, unsigned pos = 1);
};
unsigned Working::check_word(char * word, char * word_end,  CheckInfo * ci,
                             /* it WILL modify word */
                             unsigned pos)
{
  // check the whole word before go into run-together mode
  unsigned res = check_word_s(word, ci);
  // if `res` is true, it's a valid word, don't bother run-together
  if (res) return pos + 1;
  // it's typo because number of sub-words is greater than "--run-together-limit"
  if (pos + 1 >= sp->run_together_limit_) return 0;

  // `i` is the `end` of sub-word, the poition AFTER last character of sub-word
  for (char * i = word + sp->run_together_min_; 
       // already checked the whole word; besides, any sub-word whose size is less 
       // than "--run-together-min" is regarded as invalid
       i <= word_end - sp->run_together_min_;
       ++i)
  {
    char t = *i;

    // read the sub-word by set the character at `end` position to '\0'
    *i = '\0';
    res = check_word_s(word, ci);
    // restore original character at `end` position
    *i = t;

    // Current sub-word is invalid, we need append the character at current
    //  `end` position to creata new sub-word.
    //  Inncrement `i` because `i` always points to the `end` of sub-word
    if (!res) continue;

    // Current sub-word is valid, strip it from the whole word to create a totally
    // new word for `check_word`, `check_word` is a recursive function
    res = check_word(i, word_end, ci + 1, pos + 1);
    if (res) return res;
  }
  memset(ci, 0, sizeof(CheckInfo));
  return 0;
}

(defun js-flyspell-verify ()
  (let* ((font-face (get-text-property (- (point) 1) 'face))
         (word (thing-at-point 'word)))
    (message "font-face=%s word=%s" font-face word)
    t))
(put 'js2-mode 'flyspell-mode-predicate 'js-flyspell-verify)

(defun split-camel-case (word)
  "Split camel case WORD into a list of strings.
Ported from 'https://github.com/fatih/camelcase/blob/master/camelcase.go'."
  (let* ((case-fold-search nil)
         (len (length word))
         ;; ten sub-words is enough
         (runes [nil nil nil nil nil nil nil nil nil nil])
         (runes-length 0)
         (i 0)
         ch
         (last-class 0)
         (class 0)
         rlt)

    ;; split into fields based on class of character
    (while (< i len)
      (setq ch (elt word i))
      (cond
       ;; lower case
       ((and (>= ch ?a) (<= ch ?z))
        (setq class 1))
       ;; upper case
       ((and (>= ch ?A) (<= ch ?Z))
        (setq class 2))
       ((and (>= ch ?0) (<= ch ?9))
        (setq class 3))
       (t
        (setq class 4)))

      (cond
       ((= class last-class)
        (aset runes
              (1- runes-length)
              (concat (aref runes (1- runes-length)) (char-to-string ch))))
       (t
        (aset runes runes-length (char-to-string ch))
        (setq runes-length (1+ runes-length))))
      (setq last-class class)
      ;; end of while
      (setq i (1+ i)))

    ;; handle upper case -> lower case sequences, e.g.
    ;;     "PDFL", "oader" -> "PDF", "Loader"
    (setq i 0)
    (while (< i (1- runes-length))
      (let* ((ch-first (aref (aref runes i) 0))
             (ch-second (aref (aref runes (1+ i)) 0)))
        (when (and (and (>= ch-first ?A) (<= ch-first ?Z))
                   (and (>= ch-second ?a) (<= ch-second ?z)))
          (aset runes (1+ i) (concat (substring (aref runes i) -1) (aref runes (1+ i))))
          (aset runes i (substring (aref runes i) 0 -1))))
      (setq i (1+ i)))

    ;; construct final result
    (setq i 0)
    (while (< i runes-length)
      (when (> (length (aref runes i)) 0)
        (setq rlt (add-to-list 'rlt (aref runes i) t)))
      (setq i (1+ i)))
     rlt))

(defun flyspell-detect-ispell-args (&optional run-together)
  "If RUN-TOGETHER is true, spell check the CamelCase words.
Please note RUN-TOGETHER will make aspell less capable. So it should only be used in prog-mode-hook."
  ;; force the English dictionary, support Camel Case spelling check (tested with aspell 0.6)
  (let* ((args (list "--sug-mode=ultra" "--lang=en_US"))args)
    (if run-together
        (setq args (append args '("--run-together" "--run-together-limit=16"))))
    args))

;; {{ for aspell only, hunspell does not need setup `ispell-extra-args'
(setq ispell-program-name "aspell")
(setq-default ispell-extra-args (flyspell-detect-ispell-args t))
;; }}

;; ;; {{ hunspell setup, please note we use dictionary "en_US" here
;; (setq ispell-program-name "hunspell")
;; (setq ispell-local-dictionary "en_US")
;; (setq ispell-local-dictionary-alist
;;       '(("en_US" "[[:alpha:]]" "[^[:alpha:]]" "[']" nil ("-d" "en_US") nil utf-8)))
;; ;; }}

(defvar extra-flyspell-predicate '(lambda (word) t)
  "A callback to check WORD.  Return t if WORD is typo.")

(defun my-flyspell-predicate (word)
  "Use aspell to check WORD.  If it's typo return t."
  (let* ((cmd (cond
               ;; aspell: `echo "helle world" | aspell pipe`
               ((string-match-p "aspell$" ispell-program-name)
                (format "echo \"%s\" | %s pipe"
                        word
                        ispell-program-name))
               ;; hunspell: `echo "helle world" | hunspell -a -d en_US`
               (t
                (format "echo \"%s\" | %s -a -d en_US"
                        word
                        ispell-program-name))))
         (cmd-output (shell-command-to-string cmd))
         rlt)
    ;; (message "word=%s cmd=%s" word cmd)
    ;; (message "cmd-output=%s" cmd-output)
    (cond
     ((string-match-p "^&" cmd-output)
      ;; it's a typo because at least one sub-word is typo
      (setq rlt t))
     (t
      ;; not a typo
      (setq rlt nil)))
    rlt))

(defun js-flyspell-verify ()
  (let* ((case-fold-search nil)
         (font-matched (memq (get-text-property (- (point) 1) 'face)
                             '(js2-function-call
                               js2-function-param
                               js2-object-property
                               js2-object-property-access
                               font-lock-variable-name-face
                               font-lock-string-face
                               font-lock-function-name-face
                               font-lock-builtin-face
                               rjsx-text
                               rjsx-tag
                               rjsx-attr)))
         subwords
         word
         (rlt t))
    (cond
     ((not font-matched)
      (setq rlt nil))
     ;; ignore two character word
     ((< (length (setq word (thing-at-point 'word))) 2)
      (setq rlt nil))
     ;; handle camel case word
     ((and (setq subwords (split-camel-case word)) (> (length subwords) 1))
      (let* ((s (mapconcat (lambda (w)
                             (cond
                              ;; sub-word wholse length is less than three
                              ((< (length w) 3)
                               "")
                               ;; special characters
                              ((not (string-match-p "^[a-zA-Z]*$" w))
                               "")
                              (t
                               w))) subwords " ")))
        (setq rlt (my-flyspell-predicate s))))
     (t
      (setq rlt (funcall extra-flyspell-predicate word))))
    rlt))

(put 'js2-mode 'flyspell-mode-predicate 'js-flyspell-verify)
(put 'rjsx-mode 'flyspell-mode-predicate 'js-flyspell-verify)

(require 'counsel)
(defun counsel-imenu-comments ()
  "Imenu display comments."
  (interactive)
  (let* ((imenu-create-index-function 'evilnc-imenu-create-index-function))
    (counsel-imenu)))

;; Don't ask before rereading the TAGS files if they have changed
(setq tags-revert-without-query t)
;; Don't warn when TAGS files are large
(setq large-file-warning-threshold nil)
;; Setup auto update now
(add-hook 'prog-mode-hook
  (lambda ()
    (add-hook 'after-save-hook
              'counsel-etags-virtual-update-tags 'append 'local)))
(add-hook 'after-save-hook 'counsel-etags-virtual-update-tags)

<GenericTable
  onSelectRow={ row => console.log(row) }
  numberOfPinnedColumns={2}
  withToolBar
  onClickCell={ cell => console.log(cell) }
>
  <PaginationButtons />
  <TotalSum />
  <ReportButtons />
</GenericTable>

import {
  Button,
  Row,
  Column
} from 'react-bootstrap';

static int v9fs_drop_inode(struct inode *inode)
{
    struct v9fs_session_info *v9ses;
    v9ses = v9fs_inode2v9ses(inode);
    if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE)
        return generic_drop_inode(inode);
    /*
     * in case of non cached mode always drop the
     * the inode because we want the inode attribute
     * to always match that on the server.
     */
    return 1;
}

(require 'eacl)
(defun my-complete-lisp ()
  (interactive)
  (eacl-complete-multi-lines-internal "[^)]*)"))

(defvar my-ratio-dict
  '((1 . 1.61803398875)
    (2 . 2)
    (3 . 3)
    (4 . 4)
    (5 . 0.61803398875))
  "The ratio dictionary.")

(defun my-split-window-horizontally (&optional ratio)
  "Split window horizontally and resize the new window.
Always focus bigger window."
  (interactive "P")
  (let* (ratio-val)
    (cond
     (ratio
      (setq ratio-val (cdr (assoc ratio my-ratio-dict)))
      (split-window-horizontally (floor (/ (window-body-width)
                                           (1+ ratio-val)))))
     (t
      (split-window-horizontally)))
    (set-window-buffer (next-window) (other-buffer))
    (if (or (not ratio-val)
            (>= ratio-val 1))
        (windmove-right))))

(defun my-split-window-vertically (&optional ratio)
  "Split window vertically and resize the new window.
Always focus bigger window."
  (interactive "P")
  (let* (ratio-val)
    (cond
     (ratio
      (setq ratio-val (cdr (assoc ratio my-ratio-dict)))
      (split-window-vertically (floor (/ (window-body-height)
                                         (1+ ratio-val)))))
     (t
      (split-window-vertically)))
    ;; open another window with other-buffer
    (set-window-buffer (next-window) (other-buffer))
    ;; move focus if new window bigger than current one
    (if (or (not ratio-val)
            (>= ratio-val 1))
        (windmove-down))))

(global-set-key (kbd "C-x 2") 'my-split-window-vertically)
(global-set-key (kbd "C-x 3") 'my-split-window-horizontally)

(defvar ffip-read-file-name-hijacked-p nil)
(defun ffip-diff-apply-hunk (&optional reverse)
  (interactive "P")
  (unless recentf-mode (recentf-mode 1))
  (setq ffip-read-file-name-hijacked-p t)
  (defadvice read-file-name (around ffip-read-file-name-hack activate)
    (cond
     (ffip-read-file-name-hijacked-p
      (let* ((args (ad-get-args 0))
             (file-name (file-name-nondirectory (nth 2 args)))
             (cands (remove nil (mapcar (lambda (s) (if (string-match-p (format "%s$" file-name) s) s))
                                        (mapcar #'substring-no-properties recentf-list))))
             (rlt (ivy-read "Recentf: " cands)))
        (if rlt (setq ad-return-value rlt) rlt ad-doit)))
     (t
      ad-do-it)))
  (diff-apply-hunk reverse)
  (setq ffip-read-file-name-hijacked-p nil))

function searchHistory(evt, arg) {
  function timeSince(now, date) {

    var seconds = Math.floor((now - date) / 1000);

    var interval = Math.floor(seconds / 31536000);

    if (interval > 1) {
      return interval + " years";
    }
    interval = Math.floor(seconds / 2592000);
    if (interval > 1) {
      return interval + " months";
    }
    interval = Math.floor(seconds / 86400);
    if (interval > 1) {
      return interval + " days";
    }
    interval = Math.floor(seconds / 3600);
    if (interval > 1) {
      return interval + " hours";
    }
    interval = Math.floor(seconds / 60);
    if (interval > 1) {
      return interval + " minutes";
    }
    return Math.floor(seconds) + " seconds";
  }

  function searchWithKeyword(q) {
    var collection = (function() {
      //search option
      var options = PlacesUtils.history.getNewQueryOptions();
      options.maxResults = 4096;
      options.queryType = Ci.nsINavHistoryQueryOptions.QUERY_TYPE_HISTORY;
      //options.sortingMode = Ci.nsINavHistoryQueryOptions.SORT_BY_FRECENCY_DESCENDING;
      options.sortingMode = Ci.nsINavHistoryQueryOptions.SORT_BY_DATE_DESCENDING;
      options.includeHidden = true;

      //search query
      var query = PlacesUtils.history.getNewQuery();
      // read keyworld
      if(q && q !== '') {
        query.searchTerms  = q;
      }

      var result = PlacesUtils.history.executeQuery(query, options);
      var root = result.root;

      var collection = [];
      var now = new Date().getTime();
      var siteNode;
      root.containerOpen = true;
      for (var i = 0; i < root.childCount; i++) {
        // siteNode => nsINavHistoryResultNode
        siteNode = root.getChild(i);
        collection.push([siteNode.icon,siteNode.title,siteNode.uri, siteNode.time/1000]);
      }
      collection.sort(function(a, b) {
        return b[3]-a[3];
      });
      // reformat the time
      for (i = 0; i < collection.length; i++) {
        collection[i][3] = timeSince(now, collection[i][3]) + ' ago';
      }
      root.containerOpen = false;
      return collection;
    })();

    prompt.selector({
      message    : "Search history"+ (q && q !== ''? (' @'+q +':') : ':' ),
      collection : collection,
      flags      : [ICON | IGNORE, 0, 0, 0],
      header     : ["Title", "Url", "Last visited"],
      width      : [30, 60, 10],
      callback: function (i) {
        if (i >= 0) {
          openUILinkIn(collection[i][2], "tab");
        }
      },
      onFinish: function() {
        gBrowser.focus();
        _content.focus();
      }
    });
  }

  prompt.finish(true);
  prompt.read('Keyword to search history?', searchWithKeyword, null, null, null, 0, "history_search");
  // searchWithKeyword('test');

}
key.setViewKey([',', 'h', 'h'], searchHistory, "Search history");
key.setGlobalKey(['C-c', 'C-h'], searchHistory, "Search history");

;; Press `dd' to delete lines in `wgrep-mode' in evil directly
(defadvice evil-delete (around evil-delete-hack activate)
  ;; make buffer writable
  (if (and (boundp 'wgrep-prepared) wgrep-prepared)
      (wgrep-toggle-readonly-area))
  ad-do-it
  ;; make buffer read-only
  (if (and (boundp 'wgrep-prepared) wgrep-prepared)
      (wgrep-toggle-readonly-area)))

(defun counsel-ag-occur ()
  "Generate a custom occur buffer for `counsel-ag'."
  (unless (eq major-mode 'ivy-occur-grep-mode)
    (ivy-occur-grep-mode))
  (setq default-directory counsel--git-grep-dir)
  (let* ((regex (counsel-unquote-regex-parens
                 (setq ivy--old-re
                       (ivy--regex
                        (progn (string-match "\"\\(.*\\)\"" (buffer-name))
                               (match-string 1 (buffer-name)))))))
         (cands (split-string
                 (shell-command-to-string
                  (format counsel-ag-base-command (shell-quote-argument regex)))
                 "\n"
                 t)))
    ;; Need precise number of header lines for `wgrep' to work.
    (insert (format "-*- mode:grep; default-directory: %S -*-\n\n\n"
                    default-directory))
    (insert (format "%d candidates:\n" (length cands)))
    (ivy--occur-insert-lines
     (mapcar
      (lambda (cand) (concat "./" cand))
      cands))))
(ivy-set-occur 'counsel-ag 'counsel-ag-occur)
(ivy-set-display-transformer 'counsel-ag 'counsel-git-grep-transformer)

(defun wgrep-prepare-context ()
  (save-restriction
    (let ((start (wgrep-goto-first-found))
          (end (wgrep-goto-end-of-found)))
      (narrow-to-region start end)
      (goto-char (point-min))
      (funcall wgrep-results-parser))))

(defun access-files-in-wgrep-buffer()
  (interactive)
  (save-restriction
    (let* ((start (wgrep-goto-first-found))
           (end (wgrep-goto-end-of-found))
           fn-accessed)
      (narrow-to-region start end)
      (goto-char (point-min))
      (unless (featurep 'wgrep) (require 'featurep))
      (while (not (eobp))
        (if (looking-at wgrep-line-file-regexp)
            (let* ((fn (match-string-no-properties 1)))
              (unless (string= fn fn-accessed)
                (setq fn-accessed fn)
                (message "File relative path=%s" fn))))
        (forward-line 1)))))

(defun p4edit-in-wgrep-buffer()
  "'p4 edit' files in wgrep buffer.
Turn off `read-only-mode' of opened files."
  (interactive)
  (save-restriction
    (let* ((start (wgrep-goto-first-found))
           (end (wgrep-goto-end-of-found))
           fn-accessed)
      (narrow-to-region start end)
      (goto-char (point-min))
      (unless (featurep 'wgrep) (require 'featurep))
      (while (not (eobp))
        (if (looking-at wgrep-line-file-regexp)
            (let* ((filename (match-string-no-properties 1)) buf)
              (unless (string= filename fn-accessed)
                (setq fn-accessed filename)
                (shell-command (format "p4 edit %s" filename))
                (if (setq buf (get-file-buffer filename))
                    (with-current-buffer buf
                      ;; turn off read-only since we've already `p4 edit'
                      (read-only-mode -1))))))
        (forward-line 1)))))