*.[ch]: remove extern from function declarations using spatch

There has been a push to remove extern from function declarations.
Remove some instances of "extern" for function declarations which are
caught by Coccinelle. Note that Coccinelle has some difficulty with
processing functions with `__attribute__` or varargs so some `extern`
declarations are left behind to be dealt with in a future patch.

This was the Coccinelle patch used:

	@@
	type T;
	identifier f;
	@@
	- extern
	  T f(...);

and it was run with:

	$ git ls-files \*.{c,h} |
		grep -v ^compat/ |
		xargs spatch --sp-file contrib/coccinelle/noextern.cocci --in-place

Files under `compat/` are intentionally excluded as some are directly
copied from external sources and we should avoid churning them as much
as possible.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 11 insertions, 11 deletions

diff --git a/grep.h b/grep.h
index fb04893721..1875880f37 100644
--- a/grep.h
+++ b/grep.h
@@ -186,17 +186,17 @@ struct grep_opt {
 	void *output_priv;
 };
 
-extern void init_grep_defaults(struct repository *);
-extern int grep_config(const char *var, const char *value, void *);
-extern void grep_init(struct grep_opt *, struct repository *repo, const char *prefix);
+void init_grep_defaults(struct repository *);
+int grep_config(const char *var, const char *value, void *);
+void grep_init(struct grep_opt *, struct repository *repo, const char *prefix);
 void grep_commit_pattern_type(enum grep_pattern_type, struct grep_opt *opt);
 
-extern void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, const char *origin, int no, enum grep_pat_token t);
-extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t);
-extern void append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *);
-extern void compile_grep_patterns(struct grep_opt *opt);
-extern void free_grep_patterns(struct grep_opt *opt);
-extern int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size);
+void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, const char *origin, int no, enum grep_pat_token t);
+void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t);
+void append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *);
+void compile_grep_patterns(struct grep_opt *opt);
+void free_grep_patterns(struct grep_opt *opt);
+int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size);
 
 struct grep_source {
 	char *name;
@@ -226,8 +226,8 @@ void grep_source_load_driver(struct grep_source *gs,
 
 int grep_source(struct grep_opt *opt, struct grep_source *gs);
 
-extern struct grep_opt *grep_opt_dup(const struct grep_opt *opt);
-extern int grep_threads_ok(const struct grep_opt *opt);
+struct grep_opt *grep_opt_dup(const struct grep_opt *opt);
+int grep_threads_ok(const struct grep_opt *opt);
 
 /*
  * Mutex used around access to the attributes machinery if