Allow view readers to 'finalize' by calling with NULL line before closing

diff --git a/tig.c b/tig.c
index cc39d7e..fefec61 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -1928,6 +1928,7 @@ alloc_error:
        report("Allocation failure");
 
 end:
+       view->ops->read(view, NULL);
        end_update(view);
        return FALSE;
 }
@@ -2376,6 +2377,9 @@ pager_read(struct view *view, char *data)
 {
        struct line *line = &view->line[view->lines];
 
+       if (!data)
+               return TRUE;
+
        line->data = strdup(data);
        if (!line->data)
                return FALSE;
@@ -2486,7 +2490,7 @@ tree_compare_entry(enum line_type type1, char *name1,
 static bool
 tree_read(struct view *view, char *text)
 {
-       size_t textlen = strlen(text);
+       size_t textlen = text ? strlen(text) : 0;
        char buf[SIZEOF_STR];
        unsigned long pos;
        enum line_type type;
@@ -2777,7 +2781,6 @@ draw_rev_graph(struct rev_graph *graph)
                { '`',  '.' },
                { '\'', ' ' },
                { '/',  ' ' },
-
        };
        chtype symbol = get_rev_graph_symbol(graph);
        struct rev_filler *filler;
@@ -2964,10 +2967,16 @@ static bool
 main_read(struct view *view, char *line)
 {
        static struct rev_graph *graph = graph_stacks;
-       enum line_type type = get_line_type(line);
+       enum line_type type;
        struct commit *commit = view->lines
                              ? view->line[view->lines - 1].data : NULL;
 
+       if (!line) {
+               return TRUE;
+       }
+
+       type = get_line_type(line);
+
        switch (type) {
        case LINE_COMMIT:
                commit = calloc(1, sizeof(struct commit));