Combining command line options -script and -new does not work

[ctrlcctrlv]

This could be useful for development, but results in an error:

[fred@pc fontforge]$ fontforge -script imp.py -new -quiet
Traceback (most recent call last):
  File "imp.py", line 3, in <module>
    f = fontforge.fonts()[0]
IndexError: tuple index out of range

import fontforge

f = fontforge.fonts()[0]

f.createChar(ord("A"))
f["A"].right_side_bearing = 100
f["A"].importOutlines("/home/fred/Workspace/fontforge/B.jpg", 32)

Apparently the script is run before a new font is made.

Of course, we can do:

--- imp.py      2019-08-28 14:59:17.100865945 +0800
+++ imp2.py     2019-08-28 14:59:02.004199156 +0800
@@ -1,6 +1,6 @@
 import fontforge
 
-f = fontforge.fonts()[0]
+f = fontforge.font()
 
 f.createChar(ord("A"))
 f["A"].right_side_bearing = 100

But now we can't run the same script in the «Execute Script» dialog as in the command line interface.

[skef]

Seems like trying to solve this in the totally general way would be a big pain. Better to add -new to the arguments processed by scripting.c:_CheckIsScript() (possibly enhancing the loop to remove the ordering constraints). That way this would also pose no barrier to #3922 .

(I take it the alternative is to try to get the scripting initialization to use the general options processing code.)