Add Swap Occurrences Of Two Words as a vim til.

README.md

@@ -130,6 +130,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
 - [Scrolling Relative to the Window](vim/scrolling-relative-to-the-window.md)
 - [Set Your Color Scheme](vim/set-your-color-scheme.md)
 - [Split Different](vim/split-different.md)
+- [Swap Occurrences Of Two Words](vim/swap-occurrences-of-two-words.md)
 - [Tabs To Spaces](vim/tabs-to-spaces.md)
 - [The Vim Info File](vim/the-vim-info-file.md)
 - [View Commit History of a File](vim/view-commit-history-of-a-file.md)

vim/swap-occurrences-of-two-words.md

@@ -0,0 +1,22 @@
+# Swap Occurrences Of Two Words
+
+If I have a file with `foo` and `bar` all over the place and 
+
+Imagine I have a file with `foo` and `bar` all over the place. The tables
+have turned and now I want all occurrences of `foo` to be `bar` and all
+occurrences of `bar` to be `foo`.
+
+Reaching for a simple substitution won't work because after flipping all the
+occurrences of `foo` to `bar`. I will no longer be able to distinguish
+between the new `bar`s and the `bar`s that need to be flipped.
+
+[Abolish.vim](https://github.com/tpope/vim-abolish) enhances Vim's
+substitution capabilities making it easy to flip these strings in one
+relatively simple command.
+
+```
+:%S/{foo,bar}/{bar,foo}/g
+```
+
+Notice the uppercase `S` as well as the ordering of `foo` and `bar` in the before
+and after sequences.