[PATCH v2] builtin/remote.c: teach `-v` to list filters for promisor remotes

From: Abhradeep Chakraborty <chakrabortyabhradeep79@gmail.com>

`git remote -v` (`--verbose`) lists down the names of remotes along with their urls. It would be beneficial for users to also specify the filter types for promisor remotes. Something like this -

	origin	remote-url (fetch) [blob:none]
	origin	remote-url (push)

Teach `git remote -v` to also specify the filters for promisor remotes.

Signed-off-by: Abhradeep Chakraborty <chakrabortyabhradeep79@gmail.com>
---
    builtin/remote.c: teach -v to list filters for promisor remotes
    
    Fixes #1211 [1]
    
    In this version, documentation is updated (describing the proposed
    change) and url_buf is renamed into remote_info_buf.
    
    [1] https://github.com/gitgitgadget/git/issues/1211

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-1227%2FAbhra303%2Fpromisor_remote-v2
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-1227/Abhra303/promisor_remote-v2
Pull-Request: https://github.com/gitgitgadget/git/pull/1227

Range-diff vs v1:

 1:  fe3bf755e63 ! 1:  e7ced852fd5 builtin/remote.c: teach `-v` to list filters for promisor remotes
     @@ Commit message
      
          Signed-off-by: Abhradeep Chakraborty <chakrabortyabhradeep79@gmail.com>
      
     + ## Documentation/git-remote.txt ##
     +@@ Documentation/git-remote.txt: OPTIONS
     + -v::
     + --verbose::
     + 	Be a little more verbose and show remote url after name.
     ++  For promisor remotes it will show an extra information
     ++  (wrapped in square brackets) describing which filter
     ++  (`blob:none` etc.) that promisor remote use.
     + 	NOTE: This must be placed between `remote` and subcommand.
     + 
     + 
     +
       ## builtin/remote.c ##
     -@@ builtin/remote.c: static int get_one_entry(struct remote *remote, void *priv)
     +@@ builtin/remote.c: static int show_push_info_item(struct string_list_item *item, void *cb_data)
     + static int get_one_entry(struct remote *remote, void *priv)
     + {
     + 	struct string_list *list = priv;
     +-	struct strbuf url_buf = STRBUF_INIT;
     ++	struct strbuf remote_info_buf = STRBUF_INIT;
     + 	const char **url;
       	int i, url_nr;
       
       	if (remote->url_nr > 0) {
     +-		strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
      +		struct strbuf promisor_config = STRBUF_INIT;
      +		const char *partial_clone_filter = NULL;
      +
      +		strbuf_addf(&promisor_config, "remote.%s.partialclonefilter", remote->name);
     - 		strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
     ++		strbuf_addf(&remote_info_buf, "%s (fetch)", remote->url[0]);
      +		if (!git_config_get_string_tmp(promisor_config.buf, &partial_clone_filter))
     -+			strbuf_addf(&url_buf, " [%s]", partial_clone_filter);
     ++			strbuf_addf(&remote_info_buf, " [%s]", partial_clone_filter);
      +
      +		strbuf_release(&promisor_config);
       		string_list_append(list, remote->name)->util =
     - 				strbuf_detach(&url_buf, NULL);
     +-				strbuf_detach(&url_buf, NULL);
     ++				strbuf_detach(&remote_info_buf, NULL);
       	} else
     + 		string_list_append(list, remote->name)->util = NULL;
     + 	if (remote->pushurl_nr) {
     +@@ builtin/remote.c: static int get_one_entry(struct remote *remote, void *priv)
     + 	}
     + 	for (i = 0; i < url_nr; i++)
     + 	{
     +-		strbuf_addf(&url_buf, "%s (push)", url[i]);
     ++		strbuf_addf(&remote_info_buf, "%s (push)", url[i]);
     + 		string_list_append(list, remote->name)->util =
     +-				strbuf_detach(&url_buf, NULL);
     ++				strbuf_detach(&remote_info_buf, NULL);
     + 	}
     + 
     + 	return 0;
      
       ## t/t5616-partial-clone.sh ##
      @@ t/t5616-partial-clone.sh: test_expect_success 'do partial clone 1' '

 Documentation/git-remote.txt |  3 +++
 builtin/remote.c             | 18 +++++++++++++-----
 t/t5616-partial-clone.sh     | 11 +++++++++++
 3 files changed, 27 insertions(+), 5 deletions(-)