Change the method signatures of all printf helper methods to take a
`const struct wt_status *` rather than a `struct wt_status *`.

Signed-off-by: Samuel Lijin <sxli...@gmail.com>
---
 wt-status.c | 18 +++++++++---------
 wt-status.h |  4 ++--
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/wt-status.c b/wt-status.c
index 26b0a6221..55d29bc09 100644
--- a/wt-status.c
+++ b/wt-status.c
@@ -33,7 +33,7 @@ static char default_wt_status_colors[][COLOR_MAXLEN] = {
        GIT_COLOR_NIL,    /* WT_STATUS_ONBRANCH */
 };
 
-static const char *color(int slot, struct wt_status *s)
+static const char *color(int slot, const struct wt_status *s)
 {
        const char *c = "";
        if (want_color(s->use_color))
@@ -43,7 +43,7 @@ static const char *color(int slot, struct wt_status *s)
        return c;
 }
 
-static void status_vprintf(struct wt_status *s, int at_bol, const char *color,
+static void status_vprintf(const struct wt_status *s, int at_bol, const char 
*color,
                const char *fmt, va_list ap, const char *trail)
 {
        struct strbuf sb = STRBUF_INIT;
@@ -89,7 +89,7 @@ static void status_vprintf(struct wt_status *s, int at_bol, 
const char *color,
        strbuf_release(&sb);
 }
 
-void status_printf_ln(struct wt_status *s, const char *color,
+void status_printf_ln(const struct wt_status *s, const char *color,
                        const char *fmt, ...)
 {
        va_list ap;
@@ -99,7 +99,7 @@ void status_printf_ln(struct wt_status *s, const char *color,
        va_end(ap);
 }
 
-void status_printf(struct wt_status *s, const char *color,
+void status_printf(const struct wt_status *s, const char *color,
                        const char *fmt, ...)
 {
        va_list ap;
@@ -109,7 +109,7 @@ void status_printf(struct wt_status *s, const char *color,
        va_end(ap);
 }
 
-static void status_printf_more(struct wt_status *s, const char *color,
+static void status_printf_more(const struct wt_status *s, const char *color,
                               const char *fmt, ...)
 {
        va_list ap;
@@ -192,7 +192,7 @@ static void wt_longstatus_print_unmerged_header(struct 
wt_status *s)
        status_printf_ln(s, c, "%s", "");
 }
 
-static void wt_longstatus_print_cached_header(struct wt_status *s)
+static void wt_longstatus_print_cached_header(const struct wt_status *s)
 {
        const char *c = color(WT_STATUS_HEADER, s);
 
@@ -239,7 +239,7 @@ static void wt_longstatus_print_other_header(struct 
wt_status *s,
        status_printf_ln(s, c, "%s", "");
 }
 
-static void wt_longstatus_print_trailer(struct wt_status *s)
+static void wt_longstatus_print_trailer(const struct wt_status *s)
 {
        status_printf_ln(s, color(WT_STATUS_HEADER, s), "%s", "");
 }
@@ -332,7 +332,7 @@ static void wt_longstatus_print_unmerged_data(struct 
wt_status *s,
        strbuf_release(&onebuf);
 }
 
-static void wt_longstatus_print_change_data(struct wt_status *s,
+static void wt_longstatus_print_change_data(const struct wt_status *s,
                                            int change_type,
                                            struct string_list_item *it)
 {
@@ -768,7 +768,7 @@ static void wt_longstatus_print_unmerged(struct wt_status 
*s)
 
 }
 
-static void wt_longstatus_print_updated(struct wt_status *s)
+static void wt_longstatus_print_updated(const struct wt_status *s)
 {
        if (!s->commitable) {
                return;
diff --git a/wt-status.h b/wt-status.h
index 430770b85..83a1f7c00 100644
--- a/wt-status.h
+++ b/wt-status.h
@@ -135,9 +135,9 @@ int wt_status_check_bisect(const struct worktree *wt,
                           struct wt_status_state *state);
 
 __attribute__((format (printf, 3, 4)))
-void status_printf_ln(struct wt_status *s, const char *color, const char *fmt, 
...);
+void status_printf_ln(const struct wt_status *s, const char *color, const char 
*fmt, ...);
 __attribute__((format (printf, 3, 4)))
-void status_printf(struct wt_status *s, const char *color, const char *fmt, 
...);
+void status_printf(const struct wt_status *s, const char *color, const char 
*fmt, ...);
 
 /* The following functions expect that the caller took care of reading the 
index. */
 int has_unstaged_changes(int ignore_submodules);
-- 
2.16.2

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