Add Quickly Switch To A Buffer By Number as a vim til

vim/quickly-switch-to-a-buffer-by-number.md

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+# Quickly Switch To A Buffer By Number
+
+There are a number of different commands you can use for switching to a
+buffer by its number. For example, if you want to switch to the buffer
+assigned `7`, you can do `:7b` or `:e #7`. However, there is a quicker way
+than typing out either of those commands.
+
+You may already be familiar with `CTRL-^` for switching to the _alternate
+file_ which is generally the previous buffer. If you precede that command
+with a number, you will switch to the buffer with that number instead of the
+alternate file.
+
+From normal mode
+
+```vimscript
+7 Ctrl-^
+```
+
+will switch to buffer `7`.
+
+See `:h Ctrl-^` for more details.