Re: [PATCH v5 7/7] strbuf: remove global variable

> As a library that only interacts with other primitives, strbuf should
> not utilize the comment_line_char global variable within its
> functions. Therefore, add an additional parameter for functions that use
> comment_line_char and refactor callers to pass it in instead.
> strbuf_stripspace() removes the skip_comments boolean and checks if
> comment_line_char is a non-NULL character to determine whether to skip
> comments or not.

> Signed-off-by: Calvin Wan <calvinwan@google.com>
> ---
>   add-patch.c          | 12 +++++++-----
>   builtin/am.c         |  2 +-
>   builtin/branch.c     |  4 ++--
>   builtin/commit.c     |  2 +-
>   builtin/merge.c      | 10 ++++++----
>   builtin/notes.c      | 16 +++++++++-------
>   builtin/rebase.c     |  2 +-
>   builtin/stripspace.c |  6 ++++--
>   builtin/tag.c        |  9 ++++++---
>   fmt-merge-msg.c      |  9 ++++++---
>   gpg-interface.c      |  5 +++--
>   rebase-interactive.c | 15 ++++++++-------
>   sequencer.c          | 24 +++++++++++++++---------
>   strbuf.c             | 18 ++++++++++--------
>   strbuf.h             | 15 +++++++++------
>   wt-status.c          |  6 +++---
>   16 files changed, 91 insertions(+), 64 deletions(-)
> 
> diff --git a/add-patch.c b/add-patch.c
> index 8d770d203f..9702c1aabd 100644
> --- a/add-patch.c
> +++ b/add-patch.c
> @@ -1105,10 +1105,11 @@ static int edit_hunk_manually(struct add_p_state *s, struct hunk *hunk)
>   	size_t i;
>   
>   	strbuf_reset(&s->buf);
> -	strbuf_commented_addf(&s->buf, _("Manual hunk edit mode -- see bottom for "
> -				      "a quick guide.\n"));
> +	strbuf_commented_addf(&s->buf, comment_line_char,
> +			      _("Manual hunk edit mode -- see bottom for "
> +				"a quick guide.\n"));
>   	render_hunk(s, hunk, 0, 0, &s->buf);
> -	strbuf_commented_addf(&s->buf,
> +	strbuf_commented_addf(&s->buf, comment_line_char,
>   			      _("---\n"
>   				"To remove '%c' lines, make them ' ' lines "
>   				"(context).\n"
> @@ -1117,12 +1118,13 @@ static int edit_hunk_manually(struct add_p_state *s, struct hunk *hunk)
>   			      s->mode->is_reverse ? '+' : '-',
>   			      s->mode->is_reverse ? '-' : '+',
>   			      comment_line_char);
> -	strbuf_commented_addf(&s->buf, "%s", _(s->mode->edit_hunk_hint));
> +	strbuf_commented_addf(&s->buf, comment_line_char, "%s",
> +			      _(s->mode->edit_hunk_hint));
>   	/*
>   	 * TRANSLATORS: 'it' refers to the patch mentioned in the previous
>   	 * messages.
>   	 */
> -	strbuf_commented_addf(&s->buf,
> +	strbuf_commented_addf(&s->buf, comment_line_char,
>   			      _("If it does not apply cleanly, you will be "
>   				"given an opportunity to\n"
>   				"edit again.  If all lines of the hunk are "
> diff --git a/builtin/am.c b/builtin/am.c
> index 5c83f2e003..9ece2e3066 100644
> --- a/builtin/am.c
> +++ b/builtin/am.c
> @@ -1283,7 +1283,7 @@ static int parse_mail(struct am_state *state, const char *mail)
>   
>   	strbuf_addstr(&msg, "\n\n");
>   	strbuf_addbuf(&msg, &mi.log_message);
> -	strbuf_stripspace(&msg, 0);
> +	strbuf_stripspace(&msg, '\0');
>   
>   	assert(!state->author_name);
>   	state->author_name = strbuf_detach(&author_name, NULL);
> diff --git a/builtin/branch.c b/builtin/branch.c
> index 501c47657c..4560610d09 100644
> --- a/builtin/branch.c
> +++ b/builtin/branch.c
> @@ -629,7 +629,7 @@ static int edit_branch_description(const char *branch_name)
>   	exists = !read_branch_desc(&buf, branch_name);
>   	if (!buf.len || buf.buf[buf.len-1] != '\n')
>   		strbuf_addch(&buf, '\n');
> -	strbuf_commented_addf(&buf,
> +	strbuf_commented_addf(&buf, comment_line_char,
>   		    _("Please edit the description for the branch\n"
>   		      "  %s\n"
>   		      "Lines starting with '%c' will be stripped.\n"),
> @@ -640,7 +640,7 @@ static int edit_branch_description(const char *branch_name)
>   		strbuf_release(&buf);
>   		return -1;
>   	}
> -	strbuf_stripspace(&buf, 1);
> +	strbuf_stripspace(&buf, comment_line_char);
>   
>   	strbuf_addf(&name, "branch.%s.description", branch_name);
>   	if (buf.len || exists)
> diff --git a/builtin/commit.c b/builtin/commit.c
> index e67c4be221..e002ebf070 100644
> --- a/builtin/commit.c
> +++ b/builtin/commit.c
> @@ -893,7 +893,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
>   	s->hints = 0;
>   
>   	if (clean_message_contents)
> -		strbuf_stripspace(&sb, 0);
> +		strbuf_stripspace(&sb, '\0');
>   
>   	if (signoff)
>   		append_signoff(&sb, ignore_non_trailer(sb.buf, sb.len), 0);
> diff --git a/builtin/merge.c b/builtin/merge.c
> index 8da3e46abb..1d14767c0c 100644
> --- a/builtin/merge.c
> +++ b/builtin/merge.c
> @@ -879,13 +879,15 @@ static void prepare_to_commit(struct commit_list *remoteheads)
>   		strbuf_addch(&msg, '\n');
>   		if (cleanup_mode == COMMIT_MSG_CLEANUP_SCISSORS) {
>   			wt_status_append_cut_line(&msg);
> -			strbuf_commented_addf(&msg, "\n");
> +			strbuf_commented_addf(&msg, comment_line_char, "\n");
>   		}
> -		strbuf_commented_addf(&msg, _(merge_editor_comment));
> +		strbuf_commented_addf(&msg, comment_line_char,
> +				      _(merge_editor_comment));
>   		if (cleanup_mode == COMMIT_MSG_CLEANUP_SCISSORS)
> -			strbuf_commented_addf(&msg, _(scissors_editor_comment));
> +			strbuf_commented_addf(&msg, comment_line_char,
> +					      _(scissors_editor_comment));
>   		else
> -			strbuf_commented_addf(&msg,
> +			strbuf_commented_addf(&msg, comment_line_char,
>   				_(no_scissors_editor_comment), comment_line_char);
>   	}
>   	if (signoff)
> diff --git a/builtin/notes.c b/builtin/notes.c
> index d5788352b6..3bad5b458b 100644
> --- a/builtin/notes.c
> +++ b/builtin/notes.c
> @@ -11,6 +11,7 @@
>   #include "config.h"
>   #include "builtin.h"
>   #include "editor.h"
> +#include "environment.h"
>   #include "gettext.h"
>   #include "hex.h"
>   #include "notes.h"
> @@ -157,7 +158,7 @@ static void write_commented_object(int fd, const struct object_id *object)
>   
>   	if (strbuf_read(&buf, show.out, 0) < 0)
>   		die_errno(_("could not read 'show' output"));
> -	strbuf_add_commented_lines(&cbuf, buf.buf, buf.len);
> +	strbuf_add_commented_lines(&cbuf, buf.buf, buf.len, comment_line_char);
>   	write_or_die(fd, cbuf.buf, cbuf.len);
>   
>   	strbuf_release(&cbuf);
> @@ -185,9 +186,10 @@ static void prepare_note_data(const struct object_id *object, struct note_data *
>   			copy_obj_to_fd(fd, old_note);
>   
>   		strbuf_addch(&buf, '\n');
> -		strbuf_add_commented_lines(&buf, "\n", strlen("\n"));
> -		strbuf_add_commented_lines(&buf, _(note_template), strlen(_(note_template)));
> -		strbuf_add_commented_lines(&buf, "\n", strlen("\n"));
> +		strbuf_add_commented_lines(&buf, "\n", strlen("\n"), comment_line_char);
> +		strbuf_add_commented_lines(&buf, _(note_template), strlen(_(note_template)),
> +					   comment_line_char);
> +		strbuf_add_commented_lines(&buf, "\n", strlen("\n"), comment_line_char);
>   		write_or_die(fd, buf.buf, buf.len);
>   
>   		write_commented_object(fd, object);
> @@ -199,7 +201,7 @@ static void prepare_note_data(const struct object_id *object, struct note_data *
>   		if (launch_editor(d->edit_path, &d->buf, NULL)) {
>   			die(_("please supply the note contents using either -m or -F option"));
>   		}
> -		strbuf_stripspace(&d->buf, 1);
> +		strbuf_stripspace(&d->buf, comment_line_char);
>   	}
>   }
>   
> @@ -225,7 +227,7 @@ static int parse_msg_arg(const struct option *opt, const char *arg, int unset)
>   	if (d->buf.len)
>   		strbuf_addch(&d->buf, '\n');
>   	strbuf_addstr(&d->buf, arg);
> -	strbuf_stripspace(&d->buf, 0);
> +	strbuf_stripspace(&d->buf, '\0');
>   
>   	d->given = 1;
>   	return 0;
> @@ -244,7 +246,7 @@ static int parse_file_arg(const struct option *opt, const char *arg, int unset)
>   			die_errno(_("cannot read '%s'"), arg);
>   	} else if (strbuf_read_file(&d->buf, arg, 1024) < 0)
>   		die_errno(_("could not open or read '%s'"), arg);
> -	strbuf_stripspace(&d->buf, 0);
> +	strbuf_stripspace(&d->buf, '\0');
>   
>   	d->given = 1;
>   	return 0;
> diff --git a/builtin/rebase.c b/builtin/rebase.c
> index ace1d5e8d1..b1ba9fb05d 100644
> --- a/builtin/rebase.c
> +++ b/builtin/rebase.c
> @@ -209,7 +209,7 @@ static int edit_todo_file(unsigned flags)
>   	if (strbuf_read_file(&todo_list.buf, todo_file, 0) < 0)
>   		return error_errno(_("could not read '%s'."), todo_file);
>   
> -	strbuf_stripspace(&todo_list.buf, 1);
> +	strbuf_stripspace(&todo_list.buf, comment_line_char);
>   	res = edit_todo_list(the_repository, &todo_list, &new_todo, NULL, NULL, flags);
>   	if (!res && todo_list_write_to_file(the_repository, &new_todo, todo_file,
>   					    NULL, NULL, -1, flags & ~(TODO_LIST_SHORTEN_IDS)))
> diff --git a/builtin/stripspace.c b/builtin/stripspace.c
> index 9451eb69ff..1987752359 100644
> --- a/builtin/stripspace.c
> +++ b/builtin/stripspace.c
> @@ -1,6 +1,7 @@
>   #include "builtin.h"
>   #include "cache.h"
>   #include "config.h"
> +#include "environment.h"
>   #include "gettext.h"
>   #include "parse-options.h"
>   #include "setup.h"
> @@ -13,7 +14,7 @@ static void comment_lines(struct strbuf *buf)
>   	size_t len;
>   
>   	msg = strbuf_detach(buf, &len);
> -	strbuf_add_commented_lines(buf, msg, len);
> +	strbuf_add_commented_lines(buf, msg, len, comment_line_char);
>   	free(msg);
>   }
>   
> @@ -58,7 +59,8 @@ int cmd_stripspace(int argc, const char **argv, const char *prefix)
>   		die_errno("could not read the input");
>   
>   	if (mode == STRIP_DEFAULT || mode == STRIP_COMMENTS)
> -		strbuf_stripspace(&buf, mode == STRIP_COMMENTS);
> +		strbuf_stripspace(&buf,
> +			  mode == STRIP_COMMENTS ? comment_line_char : '\0');
>   	else
>   		comment_lines(&buf);
>   
> diff --git a/builtin/tag.c b/builtin/tag.c
> index 1850a6a6fd..b79e0a88e6 100644
> --- a/builtin/tag.c
> +++ b/builtin/tag.c
> @@ -311,9 +311,11 @@ static void create_tag(const struct object_id *object, const char *object_ref,
>   			struct strbuf buf = STRBUF_INIT;
>   			strbuf_addch(&buf, '\n');
>   			if (opt->cleanup_mode == CLEANUP_ALL)
> -				strbuf_commented_addf(&buf, _(tag_template), tag, comment_line_char);
> +				strbuf_commented_addf(&buf, comment_line_char,
> +				      _(tag_template), tag, comment_line_char);
>   			else
> -				strbuf_commented_addf(&buf, _(tag_template_nocleanup), tag, comment_line_char);
> +				strbuf_commented_addf(&buf, comment_line_char,
> +				      _(tag_template_nocleanup), tag, comment_line_char);
>   			write_or_die(fd, buf.buf, buf.len);
>   			strbuf_release(&buf);
>   		}
> @@ -327,7 +329,8 @@ static void create_tag(const struct object_id *object, const char *object_ref,
>   	}
>   
>   	if (opt->cleanup_mode != CLEANUP_NONE)
> -		strbuf_stripspace(buf, opt->cleanup_mode == CLEANUP_ALL);
> +		strbuf_stripspace(buf,
> +		  opt->cleanup_mode == CLEANUP_ALL ? comment_line_char : '\0');
>   
>   	if (!opt->message_given && !buf->len)
>   		die(_("no tag message?"));
> diff --git a/fmt-merge-msg.c b/fmt-merge-msg.c
> index 5af0d4715b..5d15e2387d 100644
> --- a/fmt-merge-msg.c
> +++ b/fmt-merge-msg.c
> @@ -508,7 +508,8 @@ static void fmt_tag_signature(struct strbuf *tagbuf,
>   	strbuf_complete_line(tagbuf);
>   	if (sig->len) {
>   		strbuf_addch(tagbuf, '\n');
> -		strbuf_add_commented_lines(tagbuf, sig->buf, sig->len);
> +		strbuf_add_commented_lines(tagbuf, sig->buf, sig->len,
> +					   comment_line_char);
>   	}
>   }
>   
> @@ -554,7 +555,8 @@ static void fmt_merge_msg_sigs(struct strbuf *out)
>   				strbuf_addch(&tagline, '\n');
>   				strbuf_add_commented_lines(&tagline,
>   						origins.items[first_tag].string,
> -						strlen(origins.items[first_tag].string));
> +						strlen(origins.items[first_tag].string),
> +						comment_line_char);
>   				strbuf_insert(&tagbuf, 0, tagline.buf,
>   					      tagline.len);
>   				strbuf_release(&tagline);
> @@ -562,7 +564,8 @@ static void fmt_merge_msg_sigs(struct strbuf *out)
>   			strbuf_addch(&tagbuf, '\n');
>   			strbuf_add_commented_lines(&tagbuf,
>   					origins.items[i].string,
> -					strlen(origins.items[i].string));
> +					strlen(origins.items[i].string),
> +					comment_line_char);
>   			fmt_tag_signature(&tagbuf, &sig, buf, len);
>   		}
>   		strbuf_release(&payload);
> diff --git a/gpg-interface.c b/gpg-interface.c
> index f3ac5acdd9..c27a751b70 100644
> --- a/gpg-interface.c
> +++ b/gpg-interface.c
> @@ -11,6 +11,7 @@
>   #include "tempfile.h"
>   #include "alias.h"
>   #include "wrapper.h"
> +#include "environment.h"
>   
>   static int git_gpg_config(const char *, const char *, void *);
>   
> @@ -584,8 +585,8 @@ static int verify_ssh_signed_buffer(struct signature_check *sigc,
>   		}
>   	}
>   
> -	strbuf_stripspace(&ssh_keygen_out, 0);
> -	strbuf_stripspace(&ssh_keygen_err, 0);
> +	strbuf_stripspace(&ssh_keygen_out, '\0');
> +	strbuf_stripspace(&ssh_keygen_err, '\0');
>   	/* Add stderr outputs to show the user actual ssh-keygen errors */
>   	strbuf_add(&ssh_keygen_out, ssh_principals_err.buf, ssh_principals_err.len);
>   	strbuf_add(&ssh_keygen_out, ssh_keygen_err.buf, ssh_keygen_err.len);
> diff --git a/rebase-interactive.c b/rebase-interactive.c
> index 789f407361..012defbb53 100644
> --- a/rebase-interactive.c
> +++ b/rebase-interactive.c
> @@ -71,13 +71,14 @@ void append_todo_help(int command_count,
>   
>   	if (!edit_todo) {
>   		strbuf_addch(buf, '\n');
> -		strbuf_commented_addf(buf, Q_("Rebase %s onto %s (%d command)",
> -					      "Rebase %s onto %s (%d commands)",
> -					      command_count),
> +		strbuf_commented_addf(buf, comment_line_char,
> +				      Q_("Rebase %s onto %s (%d command)",
> +					 "Rebase %s onto %s (%d commands)",
> +					 command_count),
>   				      shortrevisions, shortonto, command_count);
>   	}
>   
> -	strbuf_add_commented_lines(buf, msg, strlen(msg));
> +	strbuf_add_commented_lines(buf, msg, strlen(msg), comment_line_char);
>   
>   	if (get_missing_commit_check_level() == MISSING_COMMIT_CHECK_ERROR)
>   		msg = _("\nDo not remove any line. Use 'drop' "
> @@ -86,7 +87,7 @@ void append_todo_help(int command_count,
>   		msg = _("\nIf you remove a line here "
>   			 "THAT COMMIT WILL BE LOST.\n");
>   
> -	strbuf_add_commented_lines(buf, msg, strlen(msg));
> +	strbuf_add_commented_lines(buf, msg, strlen(msg), comment_line_char);
>   
>   	if (edit_todo)
>   		msg = _("\nYou are editing the todo file "
> @@ -97,7 +98,7 @@ void append_todo_help(int command_count,
>   		msg = _("\nHowever, if you remove everything, "
>   			"the rebase will be aborted.\n\n");
>   
> -	strbuf_add_commented_lines(buf, msg, strlen(msg));
> +	strbuf_add_commented_lines(buf, msg, strlen(msg), comment_line_char);
>   }
>   
>   int edit_todo_list(struct repository *r, struct todo_list *todo_list,
> @@ -129,7 +130,7 @@ int edit_todo_list(struct repository *r, struct todo_list *todo_list,
>   	if (launch_sequence_editor(todo_file, &new_todo->buf, NULL))
>   		return -2;
>   
> -	strbuf_stripspace(&new_todo->buf, 1);
> +	strbuf_stripspace(&new_todo->buf, comment_line_char);
>   	if (initial && new_todo->buf.len == 0)
>   		return -3;
>   
> diff --git a/sequencer.c b/sequencer.c
> index c88d1d9553..eae4563ef7 100644
> --- a/sequencer.c
> +++ b/sequencer.c
> @@ -659,11 +659,12 @@ void append_conflicts_hint(struct index_state *istate,
>   	}
>   
>   	strbuf_addch(msgbuf, '\n');
> -	strbuf_commented_addf(msgbuf, "Conflicts:\n");
> +	strbuf_commented_addf(msgbuf, comment_line_char, "Conflicts:\n");
>   	for (i = 0; i < istate->cache_nr;) {
>   		const struct cache_entry *ce = istate->cache[i++];
>   		if (ce_stage(ce)) {
> -			strbuf_commented_addf(msgbuf, "\t%s\n", ce->name);
> +			strbuf_commented_addf(msgbuf, comment_line_char,
> +					      "\t%s\n", ce->name);
>   			while (i < istate->cache_nr &&
>   			       !strcmp(ce->name, istate->cache[i]->name))
>   				i++;
> @@ -1142,7 +1143,8 @@ void cleanup_message(struct strbuf *msgbuf,
>   	    cleanup_mode == COMMIT_MSG_CLEANUP_SCISSORS)
>   		strbuf_setlen(msgbuf, wt_status_locate_end(msgbuf->buf, msgbuf->len));
>   	if (cleanup_mode != COMMIT_MSG_CLEANUP_NONE)
> -		strbuf_stripspace(msgbuf, cleanup_mode == COMMIT_MSG_CLEANUP_ALL);
> +		strbuf_stripspace(msgbuf,
> +		  cleanup_mode == COMMIT_MSG_CLEANUP_ALL ? comment_line_char : '\0');
>   }
>   
>   /*
> @@ -1173,7 +1175,8 @@ int template_untouched(const struct strbuf *sb, const char *template_file,
>   	if (!template_file || strbuf_read_file(&tmpl, template_file, 0) <= 0)
>   		return 0;
>   
> -	strbuf_stripspace(&tmpl, cleanup_mode == COMMIT_MSG_CLEANUP_ALL);
> +	strbuf_stripspace(&tmpl,
> +	  cleanup_mode == COMMIT_MSG_CLEANUP_ALL ? comment_line_char : '\0');
>   	if (!skip_prefix(sb->buf, tmpl.buf, &start))
>   		start = sb->buf;
>   	strbuf_release(&tmpl);
> @@ -1545,7 +1548,8 @@ static int try_to_commit(struct repository *r,
>   		cleanup = opts->default_msg_cleanup;
>   
>   	if (cleanup != COMMIT_MSG_CLEANUP_NONE)
> -		strbuf_stripspace(msg, cleanup == COMMIT_MSG_CLEANUP_ALL);
> +		strbuf_stripspace(msg,
> +		  cleanup == COMMIT_MSG_CLEANUP_ALL ? comment_line_char : '\0');
>   	if ((flags & EDIT_MSG) && message_is_empty(msg, cleanup)) {
>   		res = 1; /* run 'git commit' to display error message */
>   		goto out;
> @@ -1839,7 +1843,7 @@ static void add_commented_lines(struct strbuf *buf, const void *str, size_t len)
>   		s += count;
>   		len -= count;
>   	}
> -	strbuf_add_commented_lines(buf, s, len);
> +	strbuf_add_commented_lines(buf, s, len, comment_line_char);
>   }
>   
>   /* Does the current fixup chain contain a squash command? */
> @@ -1938,7 +1942,7 @@ static int append_squash_message(struct strbuf *buf, const char *body,
>   	strbuf_addf(buf, _(nth_commit_msg_fmt),
>   		    ++opts->current_fixup_count + 1);
>   	strbuf_addstr(buf, "\n\n");
> -	strbuf_add_commented_lines(buf, body, commented_len);
> +	strbuf_add_commented_lines(buf, body, commented_len, comment_line_char);
>   	/* buf->buf may be reallocated so store an offset into the buffer */
>   	fixup_off = buf->len;
>   	strbuf_addstr(buf, body + commented_len);
> @@ -2028,7 +2032,8 @@ static int update_squash_messages(struct repository *r,
>   			      _(first_commit_msg_str));
>   		strbuf_addstr(&buf, "\n\n");
>   		if (is_fixup_flag(command, flag))
> -			strbuf_add_commented_lines(&buf, body, strlen(body));
> +			strbuf_add_commented_lines(&buf, body, strlen(body),
> +						   comment_line_char);
>   		else
>   			strbuf_addstr(&buf, body);
>   
> @@ -2047,7 +2052,8 @@ static int update_squash_messages(struct repository *r,
>   		strbuf_addf(&buf, _(skip_nth_commit_msg_fmt),
>   			    ++opts->current_fixup_count + 1);
>   		strbuf_addstr(&buf, "\n\n");
> -		strbuf_add_commented_lines(&buf, body, strlen(body));
> +		strbuf_add_commented_lines(&buf, body, strlen(body),
> +					   comment_line_char);
>   	} else
>   		return error(_("unknown command: %d"), command);
>   	repo_unuse_commit_buffer(r, commit, message);
> diff --git a/strbuf.c b/strbuf.c
> index d5978fee4e..9348ac6863 100644
> --- a/strbuf.c
> +++ b/strbuf.c
> @@ -1,6 +1,5 @@
>   #include "git-compat-util.h"
>   #include "alloc.h"
> -#include "environment.h"
>   #include "gettext.h"
>   #include "hex.h"
>   #include "strbuf.h"
> @@ -362,7 +361,8 @@ static void add_lines(struct strbuf *out,
>   	strbuf_complete_line(out);
>   }
>   
> -void strbuf_add_commented_lines(struct strbuf *out, const char *buf, size_t size)
> +void strbuf_add_commented_lines(struct strbuf *out, const char *buf,
> +				size_t size, char comment_line_char)
>   {
>   	static char prefix1[3];
>   	static char prefix2[2];
> @@ -374,7 +374,8 @@ void strbuf_add_commented_lines(struct strbuf *out, const char *buf, size_t size
>   	add_lines(out, prefix1, prefix2, buf, size);
>   }
>   
> -void strbuf_commented_addf(struct strbuf *sb, const char *fmt, ...)
> +void strbuf_commented_addf(struct strbuf *sb, char comment_line_char,
> +			   const char *fmt, ...)
>   {
>   	va_list params;
>   	struct strbuf buf = STRBUF_INIT;
> @@ -384,7 +385,7 @@ void strbuf_commented_addf(struct strbuf *sb, const char *fmt, ...)
>   	strbuf_vaddf(&buf, fmt, params);
>   	va_end(params);
>   
> -	strbuf_add_commented_lines(sb, buf.buf, buf.len);
> +	strbuf_add_commented_lines(sb, buf.buf, buf.len, comment_line_char);
>   	if (incomplete_line)
>   		sb->buf[--sb->len] = '\0';
>   
> @@ -1051,10 +1052,10 @@ static size_t cleanup(char *line, size_t len)
>    *
>    * If last line does not have a newline at the end, one is added.
>    *
> - * Enable skip_comments to skip every line starting with comment
> - * character.
> + * Pass a non-NULL comment_line_char to skip every line starting
> + * with it
>    */
> -void strbuf_stripspace(struct strbuf *sb, int skip_comments)
> +void strbuf_stripspace(struct strbuf *sb, char comment_line_char)
>   {
>   	size_t empties = 0;
>   	size_t i, j, len, newlen;
> @@ -1067,7 +1068,8 @@ void strbuf_stripspace(struct strbuf *sb, int skip_comments)
>   		eol = memchr(sb->buf + i, '\n', sb->len - i);
>   		len = eol ? eol - (sb->buf + i) + 1 : sb->len - i;
>   
> -		if (skip_comments && len && sb->buf[i] == comment_line_char) {
> +		if (comment_line_char != '\0' && len &&
> +		    sb->buf[i] == comment_line_char) {
>   			newlen = 0;
>   			continue;
>   		}
> diff --git a/strbuf.h b/strbuf.h
> index b38bfd34af..89ae30b620 100644
> --- a/strbuf.h
> +++ b/strbuf.h
> @@ -292,7 +292,8 @@ void strbuf_splice(struct strbuf *sb, size_t pos, size_t len,
>    * by a comment character and a blank.
>    */
>   void strbuf_add_commented_lines(struct strbuf *out,
> -				const char *buf, size_t size);
> +				const char *buf, size_t size,
> +				char comment_line_char);
>   
>   
>   /**
> @@ -421,8 +422,8 @@ void strbuf_addf(struct strbuf *sb, const char *fmt, ...);
>    * Add a formatted string prepended by a comment character and a
>    * blank to the buffer.
>    */
> -__attribute__((format (printf, 2, 3)))
> -void strbuf_commented_addf(struct strbuf *sb, const char *fmt, ...);
> +__attribute__((format (printf, 3, 4)))
> +void strbuf_commented_addf(struct strbuf *sb, char comment_line_char, const char *fmt, ...);
>   
>   __attribute__((format (printf,2,0)))
>   void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap);
> @@ -544,10 +545,12 @@ int strbuf_getcwd(struct strbuf *sb);
>   int strbuf_normalize_path(struct strbuf *sb);
>   
>   /**
> - * Strip whitespace from a buffer. The second parameter controls if
> - * comments are considered contents to be removed or not.
> + * Strip whitespace from a buffer. The second parameter is the comment
> + * character that determines whether a line is a comment or not. If the
> + * second parameter is a non-NULL character, comments are considered
> + * contents to be removed.
>    */
> -void strbuf_stripspace(struct strbuf *buf, int skip_comments);
> +void strbuf_stripspace(struct strbuf *buf, char comment_line_char);
>   
>   static inline int strbuf_strip_suffix(struct strbuf *sb, const char *suffix)
>   {
> diff --git a/wt-status.c b/wt-status.c
> index 97b9c1c035..da7734866f 100644
> --- a/wt-status.c
> +++ b/wt-status.c
> @@ -1023,7 +1023,7 @@ static void wt_longstatus_print_submodule_summary(struct wt_status *s, int uncom
>   	if (s->display_comment_prefix) {
>   		size_t len;
>   		summary_content = strbuf_detach(&summary, &len);
> -		strbuf_add_commented_lines(&summary, summary_content, len);
> +		strbuf_add_commented_lines(&summary, summary_content, len, comment_line_char);
>   		free(summary_content);
>   	}
>   
> @@ -1098,8 +1098,8 @@ void wt_status_append_cut_line(struct strbuf *buf)
>   {
>   	const char *explanation = _("Do not modify or remove the line above.\nEverything below it will be ignored.");
>   
> -	strbuf_commented_addf(buf, "%s", cut_line);
> -	strbuf_add_commented_lines(buf, explanation, strlen(explanation));
> +	strbuf_commented_addf(buf, comment_line_char, "%s", cut_line);
> +	strbuf_add_commented_lines(buf, explanation, strlen(explanation), comment_line_char);
>   }
>   
>   void wt_status_add_cut_line(FILE *fp)