Re: [PATCH] Treat :tangle-mode as an octal value not integer

[Timothy <tecosaur@gmail.com>]

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Hi  Jeremy,

> As an org user I would expect :tangle-mode 0660 to produce a file that
> has user rw, group rw, other nothing. Instead, what really happens
> currently is 0660 is treated as an integer which is actually
> 3140. This produces unexpected file permissions.

I agree that :tangle-mode could be more user-friendly. However, I think we can
go further. Currently, only (identity #o755 / 493) works, however I think it would be
good if it worked like chmod and accepted most of the following forms:
⁃ `#o755'
⁃ `755' (because people are used to this, as technically misleading as it may be,
  as long as we can tell “:tangle-mode 356” from “:tangle-mode (identity #o544)”)
⁃ `rw' (equivalent to a=rw, and so #o555)
⁃ `a=rw,u+x' (equivalent to #o755) [hardest to support, so maybe?]

And then I’d also be in favour of accepting
⁃ `rw-r--r--' (equivalent to #o544)

I think as long as it’s clear what’s intended, and it’s not some home-baked
non-standard format, or terribly annoying to support — why not?

All the best,
Timothy