在终端中创建复杂的转义代码（转义序列）的正确方法

Question

I don't understand how to generate escape sequences eg. if:

^[[27;7;47~ maps to: CM-/

^[[27;6;40~ maps to: C-(

so why this doesn't work as I would image:

^[[27;6;83~ doesn't map to: CSs or control/shift/s

while 83 is ASCII for uppercase 'S'.

What is the correct escape code for control/shift/s (lowercase)?

Answer 1

The sequences that you're listing as examples look like xterm's programmed mode (the modifyOtherKeys resource, introduced in 2006 ). The resource setting corresponds to a control sequence which some emacs configurations know how to initialize. Referring to the manual pages, that is 2 :

   2    enables this feature for keys including the exceptions
        listed.

Because it affects all of the modifiers (including Shift ), just setting the corresponding resource is not very useful.

OSX Terminal doesn't support that control sequence (or anything like it). If you want OSX Terminal to send those escape sequences, you'll have to setup your preferences as mentioned in How to create custom escape sequence in mac terminal (using xterm as a reference). The same comment applies to other terminals which someone may suggest.

For the sake of example, here's a screenshot from one of my test programs showing s , Shift s , Control s and Shift Control s