glossary: define the term shallow clone

diff --git a/Documentation/gitk.txt b/Documentation/gitk.txt
index 1e9e38ae40e8396af82c2d6f47d3e8e8508a921d..7e03fcc62d1a388552cdd1e92f75183c0278cf28 100644 (file)
--- a/Documentation/gitk.txt
+++ b/Documentation/gitk.txt
@@ -166,8 +166,14 @@ gitk --max-count=100 --all \-- Makefile::
 
 Files
 -----
-Gitk creates the .gitk file in your $HOME directory to store preferences
-such as display options, font, and colors.
+User configuration and preferences are stored at:
+
+* '$XDG_CONFIG_HOME/git/gitk' if it exists, otherwise
+* '$HOME/.gitk' if it exists
+
+If neither of the above exist then '$XDG_CONFIG_HOME/git/gitk' is created and
+used by default. If '$XDG_CONFIG_HOME' is not set it defaults to
+'$HOME/.config' in all cases.
 
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