describe: when failing, tell the user about options that work

diff --git a/alias.c b/alias.c
index ccb1108c94436035d0da8b1d6f08f859b68294a3..372b7d809301f9e3e936459e405cd6f2627bd4a9 100644 (file)
--- a/alias.c
+++ b/alias.c
@@ -27,7 +27,7 @@ int split_cmdline(char *cmdline, const char ***argv)
        int src, dst, count = 0, size = 16;
        char quoted = 0;
 
-       *argv = xmalloc(sizeof(char*) * size);
+       *argv = xmalloc(sizeof(char *) * size);
 
        /* split alias_string */
        (*argv)[count++] = cmdline;
@@ -38,10 +38,7 @@ int split_cmdline(char *cmdline, const char ***argv)
                        while (cmdline[++src]
                                        && isspace(cmdline[src]))
                                ; /* skip */
-                       if (count >= size) {
-                               size += 16;
-                               *argv = xrealloc(*argv, sizeof(char*) * size);
-                       }
+                       ALLOC_GROW(*argv, count+1, size);
                        (*argv)[count++] = cmdline + dst;
                } else if (!quoted && (c == '\'' || c == '"')) {
                        quoted = c;
@@ -72,6 +69,9 @@ int split_cmdline(char *cmdline, const char ***argv)
                return error("unclosed quote");
        }
 
+       ALLOC_GROW(*argv, count+1, size);
+       (*argv)[count] = NULL;
+
        return count;
 }