read_prompt: return static allocated buffer; move out exec mode setup

diff --git a/tig.c b/tig.c
index b84c561..7b8fc7d 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -2686,11 +2686,11 @@ init_display(void)
        wbkgdset(status_win, get_line_attr(LINE_STATUS));
 }
 
-static int
+static char * 
 read_prompt(const char *prompt)
 {
        enum { READING, STOP, CANCEL } status = READING;
-       char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
+       static char buf[sizeof(opt_cmd) - STRING_SIZE("git \0")];
        int pos = 0;
 
        while (status == READING) {
@@ -2727,7 +2727,7 @@ read_prompt(const char *prompt)
                default:
                        if (pos >= sizeof(buf)) {
                                report("Input string too long");
-                               return ERR;
+                               return NULL;
                        }
 
                        if (isprint(key))
@@ -2738,18 +2738,12 @@ read_prompt(const char *prompt)
        if (status == CANCEL) {
                /* Clear the status window */
                report("");
-               return ERR;
+               return NULL;
        }
 
        buf[pos++] = 0;
-       if (!string_format(opt_cmd, "git %s", buf))
-               return ERR;
-       if (strncmp(buf, "show", 4) && isspace(buf[4]))
-               opt_request = REQ_VIEW_DIFF;
-       else
-               opt_request = REQ_VIEW_PAGER;
 
-       return OK;
+       return buf;
 }
 
 /*
@@ -3010,10 +3004,21 @@ main(int argc, char *argv[])
                 * status_win restricted. */
                switch (request) {
                case REQ_PROMPT:
-                       if (read_prompt(":") == ERR)
-                               request = REQ_SCREEN_UPDATE;
-                       break;
+               {
+                       char *cmd = read_prompt(":");
+
+                       if (cmd && string_format(opt_cmd, "git %s", cmd)) {
+                               if (strncmp(cmd, "show", 4) && isspace(cmd[4])) {
+                                       opt_request = REQ_VIEW_DIFF;
+                               } else {
+                                       opt_request = REQ_VIEW_PAGER;
+                               }
+                               break;
+                       }
 
+                       request = REQ_SCREEN_UPDATE;
+                       break;
+               }
                case REQ_SCREEN_RESIZE:
                {
                        int height, width;