X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/f7fd36b2289d18ac3cfedc8e160cc965e7cb2209..e00e3d5bb2426155782faee1d6f04ebef6959c8f:/README.md

diff --git a/README.md b/README.md
index ffc8b76..9801ec9 100644
--- a/README.md
+++ b/README.md
@@ -439,6 +439,20 @@ the line length if you really need to.  If you're already using Python
 that is pinned to the latest release on PyPI.  If you'd rather run on
 master, this is also an option.
 
+
+## Ignoring non-modified files
+
+*Black* remembers files it already formatted, unless the `--diff` flag is used or
+code is passed via standard input. This information is stored per-user. The exact
+location of the file depends on the black version and the system on which black
+is run. The file is non-portable. The standard location on common operating systems
+is:
+
+* Windows: `C:\\Users\<username>\AppData\Local\black\black\Cache\<version>\cache.pkl`
+* macOS: `/Users/<username>/Library/Caches/black/<version>/cache.pkl`
+* Linux: `/home/<username>/.cache/black/<version>/cache.pkl`
+
+
 ## Testimonials
 
 **Dusty Phillips**, [writer](https://smile.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=dusty+phillips):
@@ -494,12 +508,15 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md).
 
 ## Change Log
 
-### 18.4a3
+### 18.4a3 (unreleased)
+
+* added a "cache"; files already reformatted that haven't changed on disk
+  won't be reformatted again (#109)
 
 * generalized star expression handling, including double stars; this
   fixes multiplication making expressions "unsafe" for trailing commas (#132)
 
-* fix parsing of complex expressions after star and double stars in 
+* fix parsing of complex expressions after star and double stars in
   function parameters (#2)
 
 ### 18.4a2
@@ -663,4 +680,5 @@ Multiple contributions by:
 * [Eli Treuherz](mailto:eli.treuherz@cgi.com)
 * Hugo van Kemenade
 * [Ivan Katanić](mailto:ivan.katanic@gmail.com)
+* [Jonas Obrist](mailto:ojiidotch@gmail.com)
 * [Osaetin Daniel](mailto:osaetindaniel@gmail.com)