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                        <h1><a class="header" href="#emacs1" id="emacs1">emacs(1)</a></h1>
<h2><a class="header" href="#help" id="help">help</a></h2>
<pre><code class="language-markdown">  C-h ?         list available help modes
  C-h e         show message output (`*Messages*` buffer)
  C-h f         describe function
  C-h v         describe variable
  C-h w         describe which key invoke function (where-is)
  C-h c &lt;KEY&gt;   print command bound to &lt;KEY&gt;
  C-h k &lt;KEY&gt;   describe command bound to &lt;KEY&gt;
  C-h b         list buffer local key-bindings
  &lt;kseq&gt; C-h    list possible key-bindings with &lt;kseq&gt;
                eg C-x C-h -&gt; list key-bindings beginning with C-x
</code></pre>
<h2><a class="header" href="#package-manager" id="package-manager">package manager</a></h2>
<pre><code class="language-markdown">  key    fn                          description
------------------------------------------------
         package-refresh-contents    refresh package list
         package-list-packages       list available/installed packages
                                     `U x` to mark packages for Upgrade &amp; eXecute
</code></pre>
<h2><a class="header" href="#window" id="window">window</a></h2>
<pre><code class="language-markdown">  key      fn                      description
----------------------------------------------
  C-x 0    delete-window           kill focused window
  C-x 1    delete-other-windows    kill all other windows
  C-x 2    split-window-below      split horizontal
  C-x 3    split-window-right      split vertical
  C-x o    other-window            other window (cycle)
</code></pre>
<h2><a class="header" href="#buffer" id="buffer">buffer</a></h2>
<pre><code class="language-markdown">  key        fn                   description
---------------------------------------------
  C-x C-q    read-only-mode       toggle read-only mode for buffer
  C-x k      kill-buffer          kill buffer
  C-x s      save-some-buffers    save buffer
  C-x w      write-file           write buffer (save as)
  C-x b      switch-to-buffer     switch buffer
  C-x C-b    list-buffers         buffer list
</code></pre>
<h2><a class="header" href="#ibuffer" id="ibuffer">ibuffer</a></h2>
<p>Builtin advanced buffer selection mode</p>
<pre><code class="language-markdown">  key        fn            description
--------------------------------------
             ibuffer       enter buffer selection

  h                        ibuffer help

  o                        open buffer in other window
  C-o                      open buffer in other window keep focus in ibuffer

  s a                      sort by buffer name
  s f                      sort by file name
  s v                      sort by last viewed
  s v                      sort by major mode
  ,                        cycle sorting mode

  =                        compare buffer against file on disk (if file is dirty `*`)

  /m                       filter by major mode
  /n                       filter by buffer name
  /f                       filter by file name
  //                       remove all filter

  /g                       create filter group
  /\                       remove all filter groups
</code></pre>
<h2><a class="header" href="#isearch" id="isearch">isearch</a></h2>
<pre><code class="language-markdown">  key    fn                           description
-------------------------------------------------
  C-s    isearch-forward              search forward from current position (C-s to go to next match)
  C-r    isearch-backward             search backwards from current position (C-r to go to next match)
  C-w    isearch-yank-word-or-char    feed next word to current search (extend)
  M-p    isearch-ring-advance         previous search input
  M-n    isearch-ring-retreat         next search input
</code></pre>
<h2><a class="header" href="#occur" id="occur">occur</a></h2>
<pre><code class="language-markdown">  key      fn           description
-----------------------------------
  M-s o    occur        get matches for regexp in buffer
                        use during `isearch` to use current search term

  C-n                   goto next line
  C-p                   goto previous line
  o                     open match in other window
  C-o                   open match in other window keep focus in ibuffer
</code></pre>
<pre><code class="language-markdown">  key      fn                                 description
---------------------------------------------------------
           multi-occur-in-matching-buffers    run occur in buffers matching regexp
</code></pre>
<h2><a class="header" href="#grep" id="grep">grep</a></h2>
<pre><code class="language-markdown">  key    fn           description
-----------------------------------
         rgrep        recursive grep
         find-grep    run find-grep result in *grep* buffer

  n/p                 navigate next/previous match in *grep* buffer
  q                   quit *grep* buffer
</code></pre>
<h2><a class="header" href="#yankpaste" id="yankpaste">yank/paste</a></h2>
<pre><code class="language-markdown">  key         fn                  description
---------------------------------------------
  C-&lt;SPACE&gt;   set-mark-command    set start mark to select text
  M-w         kill-ring-save      copy selected text
  C-w         kill-region         kill selected text
  C-y         yank                paste selected text
  M-y         yank-pop            cycle through kill-ring (only after paste)
</code></pre>
<h2><a class="header" href="#register" id="register">register</a></h2>
<pre><code class="language-markdown">  key             fn                 description
------------------------------------------------
  C-x r s &lt;reg&gt;   copy-to-register   save region in register &lt;reg&gt;
  C-x r i &lt;reg&gt;   insert-register    insert content of register &lt;reg&gt;
</code></pre>
<h2><a class="header" href="#blockrect" id="blockrect">block/rect</a></h2>
<pre><code class="language-markdown">  key          fn                    description
------------------------------------------------
  C-x &lt;SPC&gt;    rectangle-mark-mode   activate rectangle-mark-mode
               string-rectangle      insert text in marked rect
</code></pre>
<h2><a class="header" href="#mass-edit" id="mass-edit">mass edit</a></h2>
<pre><code class="language-markdown">  key       fn                       description
------------------------------------------------
  C-x h     mark-whole-buffer        mark whole buffer
            delete-matching-line     delete lines matching regex
  M-%       query-replace            search &amp; replace
  C-M-%     query-replace-regexp     search &amp; replace regex
</code></pre>
<h2><a class="header" href="#narrow" id="narrow">narrow</a></h2>
<pre><code class="language-markdown">  key       fn                    description
---------------------------------------------
  C-x n n   narrow-to-region      show only focused region (narrow)
  C-x n w   widen                 show whole buffer (wide)
</code></pre>
<h2><a class="header" href="#org" id="org">org</a></h2>
<pre><code class="language-markdown">  key              fn   description
------------------------------------
  M-up/M-down           re-arrange items in same hierarchy
  M-left/M-right        change item hierarchy
  C-RET                 create new item below current
  C-S-RET               create new TODO item below current
  S-left/S-right        cycle TODO states
</code></pre>
<h3><a class="header" href="#org-source" id="org-source">org source</a></h3>
<pre><code class="language-markdown">  key       fn     description
------------------------------
  &lt;s TAB           generate a source block
  C-c '            edit source block (in lang specific buffer)
  C-c C-c          eval source block
</code></pre>
<h2><a class="header" href="#comapny" id="comapny">comapny</a></h2>
<pre><code class="language-markdown">  key         fn   description
-------------------------------
  C-s              search through completion candidates
  C-o              filter completion candidates based on search term
  &lt;f1&gt;             get doc for completion condidate
  M-&lt;digit&gt;        select completion candidate
</code></pre>
<h2><a class="header" href="#tags" id="tags">tags</a></h2>
<p>To generate <code>etags</code> using <code>ctags</code></p>
<pre><code class="language-markdown">  ctags -R -e .         generate emacs tag file (important `-e`)
</code></pre>
<p>Navigate using tags</p>
<pre><code class="language-markdown">  key      fn                       description
-----------------------------------------------
           xref-find-definitions    find definition of tag
           xref-find-apropos        find symbols matching regexp
           xref-find-references     find references of tag
</code></pre>
<h2><a class="header" href="#lisp" id="lisp">lisp</a></h2>
<pre><code class="language-markdown">  key   fn        description
------------------------------
        ielm      open interactive elips shell
</code></pre>
<p>In <code>lisp-interaction-mode</code> (<code>*scratch*</code> buffer by defult)</p>
<pre><code class="language-markdown">  key              fn                        description
--------------------------------------------------------
  C-j              eval-print-last-sexp      evaluate &amp; print preceeding lisp expr

  C-x C-e          eval-last-sexp            evaluate lisp expr
  C-u C-x C-e      eval-last-sexp            evaluate &amp; print
</code></pre>
<h2><a class="header" href="#ido" id="ido">ido</a></h2>
<p>Builtin fuzzy completion mode (eg buffer select, dired, ...).</p>
<pre><code class="language-markdown">  key              fn          description
------------------------------------------
                  ido-mode     toggle ido mode
  &lt;Left&gt;/&lt;Right&gt;               cycle through available competions
  &lt;RET&gt;                        select completion
</code></pre>
<h2><a class="header" href="#evil" id="evil">evil</a></h2>
<pre><code class="language-markdown">  key    fn    description
--------------------------
  C-z          toggle emacs/evil mode
  C-^          toggle between previous and current buffer
  C-p          after paste cycle kill-ring back
  C-n          after paste cycle kill-ring forward
</code></pre>
<h2><a class="header" href="#dired" id="dired">dired</a></h2>
<pre><code class="language-markdown">  key    fn    description
--------------------------
  i            open sub-dir in same buffer
  +            create new directory
  C            copy file/dir

  q            quit
</code></pre>

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                        <h1><a class="header" href="#emacs1" id="emacs1">emacs(1)</a></h1>
<h2><a class="header" href="#help" id="help">help</a></h2>
<pre><code class="language-markdown">  C-h ?         list available help modes
  C-h e         show message output (`*Messages*` buffer)
  C-h f         describe function
  C-h v         describe variable
  C-h w         describe which key invoke function (where-is)
  C-h c &lt;KEY&gt;   print command bound to &lt;KEY&gt;
  C-h k &lt;KEY&gt;   describe command bound to &lt;KEY&gt;
  C-h b         list buffer local key-bindings
  &lt;kseq&gt; C-h    list possible key-bindings with &lt;kseq&gt;
                eg C-x C-h -&gt; list key-bindings beginning with C-x
</code></pre>
<h2><a class="header" href="#package-manager" id="package-manager">package manager</a></h2>
<pre><code class="language-markdown">  key    fn                          description
------------------------------------------------
         package-refresh-contents    refresh package list
         package-list-packages       list available/installed packages
                                     `U x` to mark packages for Upgrade &amp; eXecute
</code></pre>
<h2><a class="header" href="#window" id="window">window</a></h2>
<pre><code class="language-markdown">  key      fn                      description
----------------------------------------------
  C-x 0    delete-window           kill focused window
  C-x 1    delete-other-windows    kill all other windows
  C-x 2    split-window-below      split horizontal
  C-x 3    split-window-right      split vertical
  C-x o    other-window            other window (cycle)
</code></pre>
<h2><a class="header" href="#buffer" id="buffer">buffer</a></h2>
<pre><code class="language-markdown">  key        fn                   description
---------------------------------------------
  C-x C-q    read-only-mode       toggle read-only mode for buffer
  C-x k      kill-buffer          kill buffer
  C-x s      save-some-buffers    save buffer
  C-x w      write-file           write buffer (save as)
  C-x b      switch-to-buffer     switch buffer
  C-x C-b    list-buffers         buffer list
</code></pre>
<h2><a class="header" href="#ibuffer" id="ibuffer">ibuffer</a></h2>
<p>Builtin advanced buffer selection mode</p>
<pre><code class="language-markdown">  key        fn            description
--------------------------------------
             ibuffer       enter buffer selection

  h                        ibuffer help

  o                        open buffer in other window
  C-o                      open buffer in other window keep focus in ibuffer

  s a                      sort by buffer name
  s f                      sort by file name
  s v                      sort by last viewed
  s v                      sort by major mode
  ,                        cycle sorting mode

  =                        compare buffer against file on disk (if file is dirty `*`)

  /m                       filter by major mode
  /n                       filter by buffer name
  /f                       filter by file name
  //                       remove all filter

  /g                       create filter group
  /\                       remove all filter groups
</code></pre>
<h2><a class="header" href="#isearch" id="isearch">isearch</a></h2>
<pre><code class="language-markdown">  key    fn                           description
-------------------------------------------------
  C-s    isearch-forward              search forward from current position (C-s to go to next match)
  C-r    isearch-backward             search backwards from current position (C-r to go to next match)
  C-w    isearch-yank-word-or-char    feed next word to current search (extend)
  M-p    isearch-ring-advance         previous search input
  M-n    isearch-ring-retreat         next search input
</code></pre>
<h2><a class="header" href="#occur" id="occur">occur</a></h2>
<pre><code class="language-markdown">  key      fn           description
-----------------------------------
  M-s o    occur        get matches for regexp in buffer
                        use during `isearch` to use current search term

  C-n                   goto next line
  C-p                   goto previous line
  o                     open match in other window
  C-o                   open match in other window keep focus in ibuffer
</code></pre>
<pre><code class="language-markdown">  key      fn                                 description
---------------------------------------------------------
           multi-occur-in-matching-buffers    run occur in buffers matching regexp
</code></pre>
<h2><a class="header" href="#grep" id="grep">grep</a></h2>
<pre><code class="language-markdown">  key    fn           description
-----------------------------------
         rgrep        recursive grep
         find-grep    run find-grep result in *grep* buffer

  n/p                 navigate next/previous match in *grep* buffer
  q                   quit *grep* buffer
</code></pre>
<h2><a class="header" href="#yankpaste" id="yankpaste">yank/paste</a></h2>
<pre><code class="language-markdown">  key         fn                  description
---------------------------------------------
  C-&lt;SPACE&gt;   set-mark-command    set start mark to select text
  M-w         kill-ring-save      copy selected text
  C-w         kill-region         kill selected text
  C-y         yank                paste selected text
  M-y         yank-pop            cycle through kill-ring (only after paste)
</code></pre>
<h2><a class="header" href="#register" id="register">register</a></h2>
<pre><code class="language-markdown">  key             fn                 description
------------------------------------------------
  C-x r s &lt;reg&gt;   copy-to-register   save region in register &lt;reg&gt;
  C-x r i &lt;reg&gt;   insert-register    insert content of register &lt;reg&gt;
</code></pre>
<h2><a class="header" href="#blockrect" id="blockrect">block/rect</a></h2>
<pre><code class="language-markdown">  key          fn                    description
------------------------------------------------
  C-x &lt;SPC&gt;    rectangle-mark-mode   activate rectangle-mark-mode
               string-rectangle      insert text in marked rect
</code></pre>
<h2><a class="header" href="#mass-edit" id="mass-edit">mass edit</a></h2>
<pre><code class="language-markdown">  key       fn                       description
------------------------------------------------
  C-x h     mark-whole-buffer        mark whole buffer
            delete-matching-line     delete lines matching regex
  M-%       query-replace            search &amp; replace
  C-M-%     query-replace-regexp     search &amp; replace regex
</code></pre>
<h2><a class="header" href="#narrow" id="narrow">narrow</a></h2>
<pre><code class="language-markdown">  key       fn                    description
---------------------------------------------
  C-x n n   narrow-to-region      show only focused region (narrow)
  C-x n w   widen                 show whole buffer (wide)
</code></pre>
<h2><a class="header" href="#org" id="org">org</a></h2>
<pre><code class="language-markdown">  key              fn   description
------------------------------------
  M-up/M-down           re-arrange items in same hierarchy
  M-left/M-right        change item hierarchy
  C-RET                 create new item below current
  C-S-RET               create new TODO item below current
  S-left/S-right        cycle TODO states
</code></pre>
<h3><a class="header" href="#org-source" id="org-source">org source</a></h3>
<pre><code class="language-markdown">  key       fn     description
------------------------------
  &lt;s TAB           generate a source block
  C-c '            edit source block (in lang specific buffer)
  C-c C-c          eval source block
</code></pre>
<h2><a class="header" href="#comapny" id="comapny">comapny</a></h2>
<pre><code class="language-markdown">  key         fn   description
-------------------------------
  C-s              search through completion candidates
  C-o              filter completion candidates based on search term
  &lt;f1&gt;             get doc for completion condidate
  M-&lt;digit&gt;        select completion candidate
</code></pre>
<h2><a class="header" href="#tags" id="tags">tags</a></h2>
<p>To generate <code>etags</code> using <code>ctags</code></p>
<pre><code class="language-markdown">  ctags -R -e .         generate emacs tag file (important `-e`)
</code></pre>
<p>Navigate using tags</p>
<pre><code class="language-markdown">  key      fn                       description
-----------------------------------------------
           xref-find-definitions    find definition of tag
           xref-find-apropos        find symbols matching regexp
           xref-find-references     find references of tag
</code></pre>
<h2><a class="header" href="#lisp" id="lisp">lisp</a></h2>
<pre><code class="language-markdown">  key   fn        description
------------------------------
        ielm      open interactive elips shell
</code></pre>
<p>In <code>lisp-interaction-mode</code> (<code>*scratch*</code> buffer by defult)</p>
<pre><code class="language-markdown">  key              fn                        description
--------------------------------------------------------
  C-j              eval-print-last-sexp      evaluate &amp; print preceeding lisp expr

  C-x C-e          eval-last-sexp            evaluate lisp expr
  C-u C-x C-e      eval-last-sexp            evaluate &amp; print
</code></pre>
<h2><a class="header" href="#ido" id="ido">ido</a></h2>
<p>Builtin fuzzy completion mode (eg buffer select, dired, ...).</p>
<pre><code class="language-markdown">  key              fn          description
------------------------------------------
                  ido-mode     toggle ido mode
  &lt;Left&gt;/&lt;Right&gt;               cycle through available competions
  &lt;RET&gt;                        select completion
</code></pre>
<h2><a class="header" href="#evil" id="evil">evil</a></h2>
<pre><code class="language-markdown">  key    fn    description
--------------------------
  C-z          toggle emacs/evil mode
  C-^          toggle between previous and current buffer
  C-p          after paste cycle kill-ring back
  C-n          after paste cycle kill-ring forward
</code></pre>
<h2><a class="header" href="#dired" id="dired">dired</a></h2>
<pre><code class="language-markdown">  key    fn    description
--------------------------
  i            open sub-dir in same buffer
  +            create new directory
  C            copy file/dir

  q            quit
</code></pre>

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