Re-add helm-mt

- TODO: don't add it to prog-mode-hook, add it to c-mode-hook and
  others supporting LSP

config.org

@@ -15,15 +15,12 @@ My personal emacs configuration
 This configuration requires the installation of :
 
     - the GNU =global= package (for gtags)
-    - =clang= (for ivory)
+    - ccls language server (for LSP functionality)
-    - =cmake= (for ivory)
     - =llvm-libs= (for cmake, somehow not a dependency on Manjaro when installing cmake)
     - Use python-pip to install requirements for elpy:
       =pip install jedi flake8 importmagic autopep8 yapf=
     - =ditaa= (for ascii to image generation in org-mode)
 
-When first checking out this config, run =irony-install-server= to make and install the irony-server.
-
 * Utils
 
 ** Custom command line arguments
@@ -760,6 +757,20 @@ https://github.com/bbatsov/helm-projectile
 )
 #+END_SRC
 
+** Helm-mt
+
+Helm frontend for [[Multi-term]]
+https://github.com/dfdeshom/helm-mt
+
+#+BEGIN_SRC emacs-lisp
+(use-package helm-mt
+  :ensure t
+  :bind ("C-x t" . helm-mt)
+  :config
+  (helm-mt/reroute-terminal-functions t)
+)
+#+END_SRC
+
 * Mutliple cursors
 
 https://github.com/magnars/multiple-cursors.el
@@ -869,6 +880,57 @@ On-the-fly syntax checking.
     (add-hook 'prog-mode-hook 'company-mode)
 #+END_SRC
 
+** LSP
+
+Just awesome IDE features:
+https://github.com/MaskRay/ccls
+https://github.com/MaskRay/emacs-ccls
+https://github.com/emacs-lsp/lsp-mode
+https://github.com/emacs-lsp/lsp-ui
+https://github.com/tigersoldier/company-lsp
+https://github.com/joaotavora/eglot
+
+#+BEGIN_SRC emacs-lisp
+(defun +ccls/enable ()
+  (condition-case nil
+      (lsp-ccls-enable)
+    (user-error nil)))
+
+(use-package ccls
+  :ensure t
+  :commands lsp-ccls-enable
+  :init
+  (add-hook 'c-mode-hook #'+ccls/enable)
+)
+
+(use-package lsp-ui
+  :ensure t
+  :init (add-hook 'lsp-after-open-hook #'lsp-ui-mode)
+  :config
+  (setq lsp-ui-doc-enable t
+        lsp-ui-doc-header t
+        lsp-ui-doc-include-signature t
+        ;; lsp-ui-doc-position 'at-point
+        )
+  )
+
+(use-package company-lsp
+  :ensure t
+  :config
+  (push 'company-lsp company-backends)
+  (setq company-lsp-enable-recompletion t
+        company-lsp-enable-snippet t
+        company-lsp-cache-candidates t
+        company-lsp-async t)
+)
+
+(use-package eglot
+  :ensure t
+  :init
+  (add-hook 'prog-mode-hook 'eglot-ensure)
+)
+#+END_SRC
+
 ** (Relative) Line numbers
 
 #+BEGIN_SRC emacs-lisp
@@ -883,56 +945,13 @@ On-the-fly syntax checking.
 
 *** Flycheck
 
-Clang static analyzer with flycheck
+Functionality provided by LSP and flycheck combination.
-
-https://github.com/alexmurray/flycheck-clang-analyzer
-https://github.com/Sarcasm/flycheck-irony
-
-#+BEGIN_SRC emacs-lisp
-(use-package flycheck-clang-analyzer
-  :ensure t
-  :config
-  (with-eval-after-load 'flycheck
-    (require 'flycheck-clang-analyzer)
-     (flycheck-clang-analyzer-setup)))
-
-(use-package flycheck-irony
-  :ensure t
-  :config
-    (eval-after-load 'flycheck
-      '(add-hook 'flycheck-mode-hook #'flycheck-irony-setup))
-)
-#+END_SRC
 
 *** Company
 
-https://github.com/ikirill/irony-eldoc
-
 #+BEGIN_SRC emacs-lisp
 (use-package company-c-headers
   :ensure t)
-
-(use-package company-irony
-  :ensure t
-  :config
-  (setq company-backends '((company-c-headers
-;;                            company-dabbrev-code ;; not sure what this is
-                            company-irony))))
-
-(use-package irony
-  :ensure t
-  :config
-    (add-hook 'irony-mode-hook 'irony-cdb-autosetup-compile-options)
-    (add-hook 'c++-mode-hook 'irony-mode)
-    (add-hook 'c-mode-hook 'irony-mode)
-    (add-hook 'objc-mode-hook 'irony-mode)
-)
-
-(use-package irony-eldoc
-  :ensure t
-  :config
-    (add-hook 'irony-mode-hook 'irony-eldoc)
-)
 #+END_SRC
 
 ** Python mode
@@ -1190,6 +1209,20 @@ https://github.com/myrjola/diminish.el
 )
 #+END_SRC
 
+* Shell
+** Multi-term
+<<multi-term>>
+
+Manage multiple terminals.
+
+https://www.emacswiki.org/emacs/MultiTerm
+
+#+BEGIN_SRC emacs-lisp
+(use-package multi-term
+  :ensure t
+)
+#+END_SRC
+
 * Shell-pop
 
 https://github.com/kyagi/shell-pop-el
@@ -1257,6 +1290,7 @@ https://github.com/Malabarba/paradox
   :config
     (paradox-enable)
 )
+
 #+END_SRC
 
 * EXWM