fix issue with interupting timed functions; fix for parsing comsubs inside arith for commands; allow break and continue inside arith for expressions; fix for case-insensitive completion with multibyte chars; fix some minor memory leaks; reset read buffer if it returns partial results on EINTR; fix for undo in execute-named-command

expr.c

@@ -336,7 +336,7 @@ expr_bind_variable (const char *lhs, const char *rhs)
   aflags = 0;
 #endif
   v = bind_int_variable (lhs, rhs, aflags);
-  if (v && (readonly_p (v) || noassign_p (v)))
+  if (v && ASSIGN_DISALLOWED (v, 0))
     sh_longjmp (evalbuf, 1);	/* variable assignment error */
   stupidly_hack_special_variables (lhs);
 }