*: fix typos which duplicate a word

Fix typos in code comments which repeat various words.  Most of the
cases are simple in that they repeat a word that usually cannot be
repeated in a grammatically correct sentence.  Just remove the
incorrectly duplicated word in these cases and rewrap text, if needed.

A tricky case is usage of "that that", which is sometimes grammatically
correct.  However, an instance of this in "t7527-builtin-fsmonitor.sh"
doesn't need two words "that", because there is only one daemon being
discussed, so replace the second "that" with "the".

Reword code comment "entries exist on on-disk index" in function
update_one in file cache-tree.c, by replacing incorrect preposition "on"
with "in".

Signed-off-by: Andrei Rybak <rybak.a.v@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/gitprotocol-v2.txt

@@ -665,7 +665,7 @@ headers and their prerequisite relationships, or something else.
 +
 Server operators should feel confident in turning on "bundle-uri" and
 not worry if e.g. their CDN goes down that clones or fetches will run
-into hard failures. Even if the server bundle bundle(s) are
+into hard failures. Even if the server bundle(s) are
 incomplete, or bad in some way the client should still end up with a
 functioning repository, just as if it had chosen not to use this
 protocol extension.

builtin/checkout.c

@@ -1270,7 +1270,7 @@ static int parse_branchname_arg(int argc, const char **argv,
 	 *       between A and B, A...B names that merge base.
 	 *
 	 *   (b) If <something> is _not_ a commit, either "--" is present
-	 *       or <something> is not a path, no -t or -b was given, and
+	 *       or <something> is not a path, no -t or -b was given,
 	 *       and there is a tracking branch whose name is <something>
 	 *       in one and only one remote (or if the branch exists on the
 	 *       remote named in checkout.defaultRemote), then this is a

builtin/submodule--helper.c

@@ -3219,9 +3219,8 @@ static void die_on_index_match(const char *path, int force)
 		ensure_full_index(&the_index);
 
 		/*
-		 * Since there is only one pathspec, we just need
-		 * need to check ps_matched[0] to know if a cache
-		 * entry matched.
+		 * Since there is only one pathspec, we just need to
+		 * check ps_matched[0] to know if a cache entry matched.
 		 */
 		for (i = 0; i < the_index.cache_nr; i++) {
 			ce_path_match(&the_index, the_index.cache[i], &ps,

cache-tree.c

@@ -405,7 +405,7 @@ static int update_one(struct cache_tree *it,
 		}
 
 		/*
-		 * CE_INTENT_TO_ADD entries exist on on-disk index but
+		 * CE_INTENT_TO_ADD entries exist in on-disk index but
 		 * they are not part of generated trees. Invalidate up
 		 * to root to force cache-tree users to read elsewhere.
 		 */

config.c

@@ -3154,7 +3154,7 @@ int git_config_set_gently(const char *key, const char *value)
 int repo_config_set_worktree_gently(struct repository *r,
 				    const char *key, const char *value)
 {
-	/* Only use worktree-specific config if it is is already enabled. */
+	/* Only use worktree-specific config if it is already enabled. */
 	if (repository_format_worktree_config) {
 		char *file = repo_git_path(r, "config.worktree");
 		int ret = git_config_set_multivar_in_file_gently(

run-command.c

@@ -1853,7 +1853,7 @@ enum start_bg_result start_bg_command(struct child_process *cmd,
 		 *
 		 * We also assume that `start_command()` does not add
 		 * us to the cleanup list.  And that it calls
-		 * calls `child_process_clear()`.
+		 * `child_process_clear()`.
 		 */
 		sbgr = SBGR_ERROR;
 		goto done;

t/t4301-merge-tree-write-tree.sh

@@ -141,7 +141,7 @@ test_expect_success 'test conflict notices and such' '
 #   Commit O: foo, olddir/{a,b,c}
 #   Commit A: modify foo, newdir/{a,b,c}
 #   Commit B: modify foo differently & rename foo -> olddir/bar
-#   Expected: CONFLICT(content) for for newdir/bar (not olddir/bar or foo)
+#   Expected: CONFLICT(content) for newdir/bar (not olddir/bar or foo)
 
 test_expect_success 'directory rename + content conflict' '
 	# Setup
@@ -653,7 +653,7 @@ test_expect_success 'mod6: chains of rename/rename(1to2) and add/add via collidi
 #   Commit O: foo, olddir/{a,b,c}
 #   Commit A: delete foo, rename olddir/ -> newdir/, add newdir/bar/file
 #   Commit B: modify foo & rename foo -> olddir/bar
-#   Expected: CONFLICT(content) for for newdir/bar (not olddir/bar or foo)
+#   Expected: CONFLICT(content) for newdir/bar (not olddir/bar or foo)
 
 test_expect_success 'directory rename + rename/delete + modify/delete + directory/file conflict' '
 	# Setup

t/t6421-merge-partial-clone.sh

@@ -155,7 +155,7 @@ test_setup_repo () {
 #   Commit A:
 #     (Rename leap->jump, rename basename/ -> basename/subdir/, rename dir/
 #      -> folder/, move e into newsubdir, add newfile.rs, remove f, modify
-#      both both Makefiles and jumps)
+#      both Makefiles and jumps)
 #              general/{jump1_A, jump2_A}
 #              basename/subdir/{numbers_A, sequence_A, values_A}
 #              folder/subdir/{a,b,c,d,Makefile_TOP_A}
@@ -343,7 +343,7 @@ test_expect_merge_algorithm failure success 'Objects downloaded when a directory
 #   Commit A:
 #     (Rename leap->jump, rename basename/ -> basename/subdir/, rename dir/
 #      -> folder/, move e into newsubdir, add newfile.rs, remove f, modify
-#      both both Makefiles and jumps)
+#      both Makefiles and jumps)
 #              general/{jump1_A, jump2_A}
 #              basename/subdir/{numbers_A, sequence_A, values_A}
 #              folder/subdir/{a,b,c,d,Makefile_TOP_A}

t/t7527-builtin-fsmonitor.sh

@@ -904,7 +904,7 @@ test_expect_success "submodule absorbgitdirs implicitly starts daemon" '
 
 # On a case-insensitive file system, confirm that the daemon
 # notices when the .git directory is moved/renamed/deleted
-# regardless of how it is spelled in the the FS event.
+# regardless of how it is spelled in the FS event.
 # That is, does the FS event receive the spelling of the
 # operation or does it receive the spelling preserved with
 # the file/directory.
@@ -922,8 +922,8 @@ test_expect_success CASE_INSENSITIVE_FS 'case insensitive+preserving' '
 	test_path_is_dir test_insensitive/.git &&
 	test_path_is_dir test_insensitive/.GIT &&
 
-	# Rename .git using an alternate spelling to verify that that
-	# daemon detects it and automatically shuts down.
+	# Rename .git using an alternate spelling to verify that
+	# the daemon detects it and automatically shuts down.
 	mv test_insensitive/.GIT test_insensitive/.FOO &&
 
 	# See [1] above.