Add a "view mode" which doesn't allow to write files

[gphalkes]

Sometimes it is nice to just be able to view a text file with an editor, but be sure that you don't modify the file. In other words: to use Tilde as a viewer, rather than as an editor.

[cheapy]

I would like to use Tilde in View mode under Midnight Commander to replace the internal viewer for text files. One nice thing about this would be if I was also using Tilde as my editor (which I am now), then I would have all Tilde's features for searches, navigation and windowing available.

Would it be possible to also implement the ability to exit with a ESC-ESC sequence as well as the ^Q? This would be like Midnight Commander and the old Norton Commander. I was able to do it with a couple lines of code change in main.cc {action_id_t::FILE_EXIT, "Exit", {EKEY_ESC}}, and panel->add_item("E_xit", "ESC-ESC or ^Q", action_id_t::FILE_EXIT);

Thanks, this is the best terminal editor out there!

[gphalkes]

I see two problems with adding ESC-ESC as the exit sequence:

• For those terminal emulators where the alt key doesn't have the required behavior, Tilde has a fallback behavior of allowing ESC followed by the key you would normally press combined with alt. To get the regular ESC behavior when switched to that mode, you would already press ESC-ESC. So for that situation one would then have to press ESC four times to get the desired behavior. I'd rather keep the behavior consistent between these two modes.
• This kind of sequence detection is a bit difficult to implement, as it goes against the design of tilde. That adding the lines you indicate seems to do what you want is accidental. I think you'll find that just pressing ESC once will now also exit tilde (unless you are in the mode previously described).

[ulno]

Hi BobC,

I had the same idea with mc and esc-esc as you, but I then thought, maybe it's not tilde doing it wrong but mc. It's pretty easy to set exit in mc to ctrl-q - already have it in my muscle memory - maybe an alternate solution for you?

ulno

On Sat, Mar 17, 2018 at 2:29 AM, BobC notifications@github.com wrote:

I would like to use Tilde in View mode under Midnight Commander to replace the internal viewer for text files. One nice thing about this would be if I was also using Tilde as my editor (which I am now), then I would have all Tilde's features for searches, navigation and windowing available.

Would it be possible to also implement the ability to exit with a ESC-ESC sequence as well as the ^Q? This would be like Midnight Commander and the old Norton Commander. I was able to do it with 1 line of code in main.cc {action_id_t::FILE_EXIT, "Exit", {EKEY_ESC}},

Thanks, this is the best terminal editor out there!

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[cheapy]

I installed and tried Xterm, Urxvt, Urxvt-unicode and Lxterminal, as well as Mrxvt-mini, all with Mc not loaded, and Esc-Esc doesn't work on any of them to exit from Tilde. Esc-Esc does work on all of them to exit from Midnight Commander's internal viewer as well as it's internal editor. Esc-Esc also works (yes, I sill have a few machines with it that run) on the Norton Commander 2.0 internal viewer and editor.

I do understand that if its likely to cause trouble for others, it would be silly to add the option for it, and yes, I'm sure I would eventually get used to control Q, which also worked on Norton Commander IIRC, but my purpose is to end up with a super light but totally integrated mult-tier working environnment based on terminal tabs with midnight commander running on many, where the keys used between IceWm, Mrxvt, Mc, and Tilde work in harmony to do the things I typically do efficiently.

Today I went through the IceWm and Mrxvt key bindings and minimized them down to what I actually want to use. With very-very few exceptions, where it was actually needed, I basically limited each level to a group of keys, ie all Mrxvt keys are Ctrl-Shift based, and no IceWm, Tilde Keys or Mc keys are Ctrl-Shift based, so there will be no more conflicts with Mrxvt key mapping. I also unmapped almost all IceWm keys, leaving only the few that I actually use, again simplifying what keys I need to remember and reducing possible conflicts as a result. It was a mess that needed to be cleaned up anyway. :)