m_option: fix scientific notation timestamp parsing

Fixes: a173b47

Author: llyyr

options/m_option.c

@@ -2673,8 +2673,10 @@ static int parse_timestring(struct bstr str, double *time, char endchar)
     bool neg = bstr_eatstart0(&str, "-");
     if (!neg)
         bstr_eatstart0(&str, "+");
-    if (bstrchr(str, '-') >= 0 || bstrchr(str, '+') >= 0)
-        return 0; /* the timestamp shouldn't contain anymore +/- after this point */
+    bool sci = bstr_find0(str, "e-") >= 0 || bstr_find0(str, "e+") >= 0;
+    /* non-scientific notation timestamps shouldn't contain anymore +/- after this point */
+    if (!sci && (bstrchr(str, '-') >= 0 || bstrchr(str, '+') >= 0))
+        return 0;
     if (bstr_sscanf(str, "%u:%u:%lf%n", &h, &m, &s, &len) >= 3) {
         if (m >= 60 || s >= 60)
             return 0; /* minutes or seconds are out of range */