[PATCH v2 03/17] treewide: remove unnecessary cache.h includes

["Elijah Newren via GitGitGadget" <gitgitgadget@gmail.com>]

From: Elijah Newren <newren@gmail.com>

We had several header files include cache.h unnecessarily.  Remove
those.  These have all been verified via both ensuring that
    gcc -E $HEADER | grep '"cache.h"'
found no hits and that
    cat >temp.c <<EOF &&
    #include "git-compat-util.h"
    #include "$HEADER"
    int main() {}
    EOF
    gcc -c temp.c
successfully compiles without warnings.

Signed-off-by: Elijah Newren <newren@gmail.com>
---
 checkout.h           | 2 +-
 entry.h              | 4 +++-
 khash.h              | 1 -
 oidmap.h             | 1 -
 pretty.h             | 2 +-
 reflog-walk.h        | 2 --
 refs/refs-internal.h | 1 -
 remote.h             | 1 -
 sequencer.h          | 2 +-
 xdiff-interface.h    | 2 +-
 10 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/checkout.h b/checkout.h
index 1152133bd77..1917f3b3230 100644
--- a/checkout.h
+++ b/checkout.h
@@ -1,7 +1,7 @@
 #ifndef CHECKOUT_H
 #define CHECKOUT_H
 
-#include "cache.h"
+#include "hash.h"
 
 /*
  * Check if the branch name uniquely matches a branch name on a remote
diff --git a/entry.h b/entry.h
index 2d4fbb88c8f..7329f918a97 100644
--- a/entry.h
+++ b/entry.h
@@ -1,9 +1,11 @@
 #ifndef ENTRY_H
 #define ENTRY_H
 
-#include "cache.h"
 #include "convert.h"
 
+struct cache_entry;
+struct index_state;
+
 struct checkout {
 	struct index_state *istate;
 	const char *base_dir;
diff --git a/khash.h b/khash.h
index cb79bf88567..85362718c56 100644
--- a/khash.h
+++ b/khash.h
@@ -26,7 +26,6 @@
 #ifndef __AC_KHASH_H
 #define __AC_KHASH_H
 
-#include "cache.h"
 #include "hashmap.h"
 
 #define AC_VERSION_KHASH_H "0.2.8"
diff --git a/oidmap.h b/oidmap.h
index c66a83ab1d6..c1642927fa6 100644
--- a/oidmap.h
+++ b/oidmap.h
@@ -1,7 +1,6 @@
 #ifndef OIDMAP_H
 #define OIDMAP_H
 
-#include "cache.h"
 #include "hashmap.h"
 
 /*
diff --git a/pretty.h b/pretty.h
index f34e24c53a4..9508c22f030 100644
--- a/pretty.h
+++ b/pretty.h
@@ -1,11 +1,11 @@
 #ifndef PRETTY_H
 #define PRETTY_H
 
-#include "cache.h"
 #include "date.h"
 #include "string-list.h"
 
 struct commit;
+struct repository;
 struct strbuf;
 struct process_trailer_options;
 
diff --git a/reflog-walk.h b/reflog-walk.h
index 8076f10d9fb..4d93a269571 100644
--- a/reflog-walk.h
+++ b/reflog-walk.h
@@ -1,8 +1,6 @@
 #ifndef REFLOG_WALK_H
 #define REFLOG_WALK_H
 
-#include "cache.h"
-
 struct commit;
 struct reflog_walk_info;
 struct date_mode;
diff --git a/refs/refs-internal.h b/refs/refs-internal.h
index 69f93b0e2ac..a85d113123c 100644
--- a/refs/refs-internal.h
+++ b/refs/refs-internal.h
@@ -1,7 +1,6 @@
 #ifndef REFS_REFS_INTERNAL_H
 #define REFS_REFS_INTERNAL_H
 
-#include "cache.h"
 #include "refs.h"
 #include "iterator.h"
 
diff --git a/remote.h b/remote.h
index 1ebbe42792e..5b38ee20b84 100644
--- a/remote.h
+++ b/remote.h
@@ -1,7 +1,6 @@
 #ifndef REMOTE_H
 #define REMOTE_H
 
-#include "cache.h"
 #include "parse-options.h"
 #include "hashmap.h"
 #include "refspec.h"
diff --git a/sequencer.h b/sequencer.h
index 3bcdfa1b586..33dbaf5b66d 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -1,11 +1,11 @@
 #ifndef SEQUENCER_H
 #define SEQUENCER_H
 
-#include "cache.h"
 #include "strbuf.h"
 #include "wt-status.h"
 
 struct commit;
+struct index_state;
 struct repository;
 
 const char *git_path_commit_editmsg(void);
diff --git a/xdiff-interface.h b/xdiff-interface.h
index 4301a7eef27..3750794afe9 100644
--- a/xdiff-interface.h
+++ b/xdiff-interface.h
@@ -1,7 +1,7 @@
 #ifndef XDIFF_INTERFACE_H
 #define XDIFF_INTERFACE_H
 
-#include "cache.h"
+#include "hash.h"
 #include "xdiff/xdiff.h"
 
 /*
-- 
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