i18n: fix mismatched camelCase config variables

Some config variables are combinations of multiple words, and we
typically write them in camelCase forms in manpage and translatable
strings. It's not easy to find mismatches for these camelCase config
variables during code reviews, but occasionally they are identified
during localization translations.

To check for mismatched config variables, I introduced a new feature
in the helper program for localization[^1]. The following mismatched
config variables have been identified by running the helper program,
such as "git-po-helper check-pot".

Lowercase in manpage should use camelCase:

 * Documentation/config/http.txt: http.pinnedpubkey

Lowercase in translable strings should use camelCase:

 * builtin/fast-import.c:  pack.indexversion
 * builtin/gc.c:           gc.logexpiry
 * builtin/index-pack.c:   pack.indexversion
 * builtin/pack-objects.c: pack.indexversion
 * builtin/repack.c:       pack.writebitmaps
 * commit.c:               i18n.commitencoding
 * gpg-interface.c:        user.signingkey
 * http.c:                 http.postbuffer
 * submodule-config.c:     submodule.fetchjobs

Mismatched camelCases, choose the former:

 * Documentation/config/transfer.txt: transfer.credentialsInUrl
   remote.c:                          transfer.credentialsInURL

[^1]: https://github.com/git-l10n/git-po-helper

Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/config/http.txt

@@ -203,7 +203,7 @@ http.schannelUseSSLCAInfo::
 	when the `schannel` backend was configured via `http.sslBackend`,
 	unless `http.schannelUseSSLCAInfo` overrides this behavior.
 
-http.pinnedpubkey::
+http.pinnedPubkey::
 	Public key of the https service. It may either be the filename of
 	a PEM or DER encoded public key file or a string starting with
 	'sha256//' followed by the base64 encoded sha256 hash of the

builtin/fast-import.c

@@ -3465,7 +3465,7 @@ static void git_pack_config(void)
 		pack_idx_opts.version = indexversion_value;
 		if (pack_idx_opts.version > 2)
 			git_die_config("pack.indexversion",
-					"bad pack.indexversion=%"PRIu32, pack_idx_opts.version);
+					"bad pack.indexVersion=%"PRIu32, pack_idx_opts.version);
 	}
 	if (!git_config_get_ulong("pack.packsizelimit", &packsizelimit_value))
 		max_packsize = packsizelimit_value;

builtin/gc.c

@@ -581,7 +581,7 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
 	/* default expiry time, overwritten in gc_config */
 	gc_config();
 	if (parse_expiry_date(gc_log_expire, &gc_log_expire_time))
-		die(_("failed to parse gc.logexpiry value %s"), gc_log_expire);
+		die(_("failed to parse gc.logExpiry value %s"), gc_log_expire);
 
 	if (pack_refs < 0)
 		pack_refs = !is_bare_repository();

builtin/index-pack.c

@@ -1575,7 +1575,7 @@ static int git_index_pack_config(const char *k, const char *v, void *cb)
 	if (!strcmp(k, "pack.indexversion")) {
 		opts->version = git_config_int(k, v);
 		if (opts->version > 2)
-			die(_("bad pack.indexversion=%"PRIu32), opts->version);
+			die(_("bad pack.indexVersion=%"PRIu32), opts->version);
 		return 0;
 	}
 	if (!strcmp(k, "pack.threads")) {

builtin/pack-objects.c

@@ -3170,7 +3170,7 @@ static int git_pack_config(const char *k, const char *v, void *cb)
 	if (!strcmp(k, "pack.indexversion")) {
 		pack_idx_opts.version = git_config_int(k, v);
 		if (pack_idx_opts.version > 2)
-			die(_("bad pack.indexversion=%"PRIu32),
+			die(_("bad pack.indexVersion=%"PRIu32),
 			    pack_idx_opts.version);
 		return 0;
 	}

builtin/repack.c

@@ -41,7 +41,7 @@ static const char *const git_repack_usage[] = {
 
 static const char incremental_bitmap_conflict_error[] = N_(
 "Incremental repacks are incompatible with bitmap indexes.  Use\n"
-"--no-write-bitmap-index or disable the pack.writebitmaps configuration."
+"--no-write-bitmap-index or disable the pack.writeBitmaps configuration."
 );
 
 struct pack_objects_args {

commit.c

@@ -1526,7 +1526,7 @@ static int verify_utf8(struct strbuf *buf)
 static const char commit_utf8_warn[] =
 N_("Warning: commit message did not conform to UTF-8.\n"
    "You may want to amend it after fixing the message, or set the config\n"
-   "variable i18n.commitencoding to the encoding your project uses.\n");
+   "variable i18n.commitEncoding to the encoding your project uses.\n");
 
 int commit_tree_extended(const char *msg, size_t msg_len,
 			 const struct object_id *tree,

gpg-interface.c

@@ -985,7 +985,7 @@ static int sign_buffer_ssh(struct strbuf *buffer, struct strbuf *signature,
 
 	if (!signing_key || signing_key[0] == '\0')
 		return error(
-			_("user.signingkey needs to be set for ssh signing"));
+			_("user.signingKey needs to be set for ssh signing"));
 
 	if (is_literal_ssh_key(signing_key, &literal_key)) {
 		/* A literal ssh key */

http.c

@@ -349,7 +349,7 @@ static int http_options(const char *var, const char *value, void *cb)
 	if (!strcmp("http.postbuffer", var)) {
 		http_post_buffer = git_config_ssize_t(var, value);
 		if (http_post_buffer < 0)
-			warning(_("negative value for http.postbuffer; defaulting to %d"), LARGE_PACKET_MAX);
+			warning(_("negative value for http.postBuffer; defaulting to %d"), LARGE_PACKET_MAX);
 		if (http_post_buffer < LARGE_PACKET_MAX)
 			http_post_buffer = LARGE_PACKET_MAX;
 		return 0;

remote.c

@@ -633,7 +633,7 @@ static void validate_remote_url(struct remote *remote)
 	else if (!strcmp("allow", value))
 		return;
 	else
-		die(_("unrecognized value transfer.credentialsInURL: '%s'"), value);
+		die(_("unrecognized value transfer.credentialsInUrl: '%s'"), value);
 
 	for (i = 0; i < remote->url_nr; i++) {
 		struct url_info url_info = { 0 };

submodule-config.c

@@ -302,7 +302,7 @@ int parse_submodule_fetchjobs(const char *var, const char *value)
 {
 	int fetchjobs = git_config_int(var, value);
 	if (fetchjobs < 0)
-		die(_("negative values not allowed for submodule.fetchjobs"));
+		die(_("negative values not allowed for submodule.fetchJobs"));
 	return fetchjobs;
 }