Avoid C99 comments, use old-style C comments instead.

This doesn't make the code uglier or harder to read, yet it makes the
code more portable.  This also simplifies checking for other potential
incompatibilities.  "gcc -std=c89 -pedantic" can flag many incompatible
constructs as warnings, but C99 comments will cause it to emit an error.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

blame.c

@@ -44,8 +44,8 @@ struct util_info {
 };
 
 struct chunk {
-	int off1, len1;	// ---
-	int off2, len2;	// +++
+	int off1, len1;	/* --- */
+	int off2, len2;	/* +++ */
 };
 
 struct patch {
@@ -255,7 +255,7 @@ static void print_map(struct commit *cmit, struct commit *other)
 }
 #endif
 
-// p is a patch from commit to other.
+/* p is a patch from commit to other. */
 static void fill_line_map(struct commit *commit, struct commit *other,
 			  struct patch *p)
 {

builtin-apply.c

@@ -14,14 +14,15 @@
 #include "delta.h"
 #include "builtin.h"
 
-//  --check turns on checking that the working tree matches the
-//    files that are being modified, but doesn't apply the patch
-//  --stat does just a diffstat, and doesn't actually apply
-//  --numstat does numeric diffstat, and doesn't actually apply
-//  --index-info shows the old and new index info for paths if available.
-//  --index updates the cache as well.
-//  --cached updates only the cache without ever touching the working tree.
-//
+/*
+ *  --check turns on checking that the working tree matches the
+ *    files that are being modified, but doesn't apply the patch
+ *  --stat does just a diffstat, and doesn't actually apply
+ *  --numstat does numeric diffstat, and doesn't actually apply
+ *  --index-info shows the old and new index info for paths if available.
+ *  --index updates the cache as well.
+ *  --cached updates only the cache without ever touching the working tree.
+ */
 static const char *prefix;
 static int prefix_length = -1;
 static int newfd = -1;
@@ -284,8 +285,8 @@ static void parse_traditional_patch(const char *first, const char *second, struc
 {
 	char *name;
 
-	first += 4;	// skip "--- "
-	second += 4;	// skip "+++ "
+	first += 4;	/* skip "--- " */
+	second += 4;	/* skip "+++ " */
 	if (is_dev_null(first)) {
 		patch->is_new = 1;
 		patch->is_delete = 0;

builtin-push.c

@@ -273,7 +273,7 @@ static int do_push(const char *repo)
 int cmd_push(int argc, const char **argv, char **envp)
 {
 	int i;
-	const char *repo = "origin";	// default repository
+	const char *repo = "origin";	/* default repository */
 
 	for (i = 1; i < argc; i++) {
 		const char *arg = argv[i];

convert-objects.c

@@ -240,27 +240,27 @@ static void convert_date(void *buffer, unsigned long size, unsigned char *result
 {
 	char *new = xmalloc(size + 100);
 	unsigned long newlen = 0;
-	
-	// "tree <sha1>\n"
+
+	/* "tree <sha1>\n" */
 	memcpy(new + newlen, buffer, 46);
 	newlen += 46;
 	buffer = (char *) buffer + 46;
 	size -= 46;
 
-	// "parent <sha1>\n"
+	/* "parent <sha1>\n" */
 	while (!memcmp(buffer, "parent ", 7)) {
 		memcpy(new + newlen, buffer, 48);
 		newlen += 48;
 		buffer = (char *) buffer + 48;
 		size -= 48;
 	}
 
-	// "author xyz <xyz> date"
+	/* "author xyz <xyz> date" */
 	newlen += convert_date_line(new + newlen, &buffer, &size);
-	// "committer xyz <xyz> date"
+	/* "committer xyz <xyz> date" */
 	newlen += convert_date_line(new + newlen, &buffer, &size);
 
-	// Rest
+	/* Rest */
 	memcpy(new + newlen, buffer, size);
 	newlen += size;
 

dir.c

@@ -336,7 +336,7 @@ static int read_directory_recursive(struct dir_struct *dir, const char *path, co
 				if (dir->show_other_directories &&
 				    (subdir || !dir->hide_empty_directories) &&
 				    !dir_exists(fullname, baselen + len)) {
-					// Rewind the read subdirectory
+					/* Rewind the read subdirectory */
 					while (dir->nr > rewind_base)
 						free(dir->entries[--dir->nr]);
 					break;

http-fetch.c

@@ -490,7 +490,7 @@ static int setup_index(struct alt_base *repo, unsigned char *sha1)
 {
 	struct packed_git *new_pack;
 	if (has_pack_file(sha1))
-		return 0; // don't list this as something we can get
+		return 0; /* don't list this as something we can get */
 
 	if (fetch_index(repo, sha1))
 		return -1;
@@ -570,7 +570,7 @@ static void process_alternates_response(void *callback_data)
 						 base[serverlen - 1] != '/');
 					i += 3;
 				}
-				// If the server got removed, give up.
+				/* If the server got removed, give up. */
 				okay = strchr(base, ':') - base + 3 <
 					serverlen;
 			} else if (alt_req->http_specific) {
@@ -581,7 +581,7 @@ static void process_alternates_response(void *callback_data)
 					okay = 1;
 				}
 			}
-			// skip 'objects' at end
+			/* skip 'objects' at end */
 			if (okay) {
 				target = xmalloc(serverlen + posn - i - 6);
 				strlcpy(target, base, serverlen);

mktag.c

@@ -17,7 +17,7 @@
  * in that size, you're doing something wrong.
  */
 
-// Some random size
+/* Some random size */
 #define MAXSIZE (8192)
 
 /*
@@ -123,7 +123,8 @@ int main(int argc, char **argv)
 		die("could not read from stdin");
 	}
 
-	// Verify it for some basic sanity: it needs to start with "object <sha1>\ntype\ntagger "
+	/* Verify it for some basic sanity: it needs to start with
+	   "object <sha1>\ntype\ntagger " */
 	if (verify_tag(buffer, size) < 0)
 		die("invalid tag signature file");
 

read-cache.c

@@ -748,7 +748,7 @@ int read_cache(void)
 		die("index file open failed (%s)", strerror(errno));
 	}
 
-	size = 0; // avoid gcc warning
+	size = 0; /* avoid gcc warning */
 	map = MAP_FAILED;
 	if (!fstat(fd, &st)) {
 		size = st.st_size;

sha1_file.c

@@ -453,7 +453,7 @@ int use_packed_git(struct packed_git *p)
 {
 	if (!p->pack_size) {
 		struct stat st;
-		// We created the struct before we had the pack
+		/* We created the struct before we had the pack */
 		stat(p->pack_name, &st);
 		if (!S_ISREG(st.st_mode))
 			die("packfile %s not a regular file", p->pack_name);
@@ -1504,7 +1504,7 @@ static void *repack_object(const unsigned char *sha1, unsigned long *objsize)
 	int hdrlen;
 	void *buf;
 
-	// need to unpack and recompress it by itself
+	/* need to unpack and recompress it by itself */
 	unpacked = read_packed_sha1(sha1, type, &len);
 
 	hdrlen = sprintf(hdr, "%s %lu", type, len) + 1;

ssh-fetch.c

@@ -68,7 +68,7 @@ int fetch(unsigned char *sha1)
 	struct object_list *temp;
 
 	if (memcmp(sha1, in_transit->item->sha1, 20)) {
-		// we must have already fetched it to clean the queue
+		/* we must have already fetched it to clean the queue */
 		return has_sha1_file(sha1) ? 0 : -1;
 	}
 	prefetches--;
@@ -85,7 +85,7 @@ int fetch(unsigned char *sha1)
 		if (read(fd_in, &remote, 1) < 1)
 			return -1;
 	}
-	//fprintf(stderr, "Got %d\n", remote);
+	/* fprintf(stderr, "Got %d\n", remote); */
 	if (remote < 0)
 		return remote;
 	ret = write_sha1_from_fd(sha1, fd_in, conn_buf, 4096, &conn_buf_posn);