doc/bugs/filename_with___34____63____34___causes_unknown_response.mdwn

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+### Please describe the problem.
+When I do git annex add on a directory with a filename that include a "?"
+I get an error:
+git-annex: unknown response from git cat-file ("HEAD:./Home/wc/Icon missing","HEAD:./Home/wc/Icon\r")
+CallStack (from HasCallStack):
+  error, called at ./Git/CatFile.hs:86:48 in main:Git.CatFile
+
+where the file here was called "Icon?"
+
+### What steps will reproduce the problem?
+mkdir test
+
+cd test
+
+git init
+
+git annex init "test"
+
+cp ~/Desktop/Icon? .
+
+ls
+
+Icon?
+
+git annex add .
+
+ git-annex: unknown response from git cat-file ("HEAD:./Icon missing","HEAD:./Icon\r")
+CallStack (from HasCallStack):
+  error, called at ./Git/CatFile.hs:86:48 in main:Git.CatFile
+
+### What version of git-annex are you using? On what operating system?
+git-annex-6.20160619
+
+OSX El Capitan using brew install git-annex
+
+### Please provide any additional information below.
+
+[[!format sh """
+# If you can, paste a complete transcript of the problem occurring here.
+# If the problem is with the git-annex assistant, paste in .git/annex/daemon.log
+
+
+# End of transcript or log.
+"""]]
+
+### Have you had any luck using git-annex before? (Sometimes we get tired of reading bug reports all day and a lil' positive end note does wonders)
+