Add scouts honor escape hatch for source embedding

tool/scripts/configure-emacs.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+
+if ! [ -e ape/ape.S ]; then
+  echo please cd to cosmopolitan root directory >&2
+  exit 1
+fi
+
+COSMOPOLITAN="$PWD"
+EMACSCONFIGS="$HOME/.emacs.d/init.el"
+[ -e "$EMACSCONFIGS" ] || EMACSCONFIGS="$HOME/.emacs"
+
+cat >>"$EMACSCONFIGS" <<EOF # idempotent
+(let ((path "$COSMOPOLITAN/tool/emacs"))
+  (when (file-directory-p path)
+    (add-to-list 'load-path path)
+    (require 'cosmo)))
+EOF

tool/scripts/grep

@@ -0,0 +1,6 @@
+#!/bin/sh
+exec /usr/bin/grep      \
+     --exclude-dir=o    \
+     --exclude-dir=gcc  \
+     --exclude-dir=.git \
+     "$@"

tool/scripts/install-emacs.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+# installs emacs version w/ working (replace-buffer-contents)
+# it's sooooo worth it due to clang-format-10 working so well
+set -ex
+sudo apt build-dep emacs
+cd "$HOME"
+export CFLAGS="-O2"
+rm -rf emacs-26.3
+wget http://mirrors.kernel.org/gnu/emacs/emacs-26.3.tar.gz
+tar xf emacs-26.3.tar.gz
+cd emacs-26.3
+./configure
+make -j8
+sudo make install
+rm -f ../emacs-26.3.tar.gz