key-sequence | Detect a sequence of key presses | IDE Plugin library

I have the following DTD and XML file. When I try to validate the file, I get the following error. Clearly looking at the xml on line 6, is is an empty tag. I have found several examples on line that have EMPTY ELEMENTS with ATTLIST. What am I doing wrong?

org.xml.sax.SAXParseException; systemId: file:///C:/tdc-to-xml/ejb.xml; lineNumber: 6; columnNumber: 145; The content of element type "field" is incomplete, it must match "(EMPTY)".

DTD

I'd like to assign multiple key combinations that would exit vim insert mode in spacemacs. I tried:

(setq-default evil-escape-key-sequence "fj" "jf" "fd" "df")

But only the first one works. How should I do it properly?

The question is about the implementation of a popup menu, namely getting a multilevel submenu. The above code creates a simple menu with one nesting level (uncomment supPane1 and comment ;supSupPane). When trying to add another attachment (uncomment supSupPane and comment ;supPane1) the result is unexpected for me.

What I want to validate:

I desire to review all the key-sequences with prefix "C-c"

Issue C-c, it prompts

and remind that C-h C-n to reference the next page.
I want to view them all simultaneously within a single buffer and tried to C-x 1 with intention of see them in a full-screen buffer.

Unfortunately, such an operation is deactivated in the mini-buffer which C-c invoke, In contrast, grep-find, grep's minibuffer could be manipulated with C-x 1.

How could view all the commands prefix with C-c

I recently had the very unpleasant experience of the postgresql sequence falling out of sync with the table id in a rails app. Until this happened, rails 'magic' meant that I had never known what a postgresql sequence was - it had always happened automagically. Even more alarmingly, I didn't even know when I had caused this 'out of sync' issue to occur (it was only when later records were created that the errors were thrown)

I managed to wade my way through the drama. But now I want to understand all the possible causes of such a severe problem as the postgresql sequence falling out of sync with the id in a rails table. I want to know this so I can avoid it in the future.

I caused it to happen by creating new records manually where I specified the id. E.g. User.create(id: 4566, name: "Jo", email: "jo@gmail.com") (importantly, creating the record without specifying the id would have avoided the issue i.e. User.create(name: "Jo", email: "jo@gmail.com")

My question: in addition to specifying ids in newly created records, what other things does a rails dev need to know will cause this issue?

I am trying to remap cursor moves and such in my terminal, using Urxvt "keysym" resource. For example, this shortcut (in my .Xresources) does previous-word :

*keysym.Control-h: \033[1;5D

I didn't find a complete (working) list of sequences like this 1;5D. I know a few others (Home, End...) but need some others (kill next word, kill last word, cancel last action...). The quest for this list is not new, but the answers aren't what they seem to be (not working, maybe not the \033[ type ?). I spent hours on Google, Wikipedia, manual pages (urxvt, readline, ascii, xterm, bash...), it looks like some kind of cruel initiation.

Where can I find this reference ?

Sorry for the very newb question, but was just trying to configure a separate directory for yasnippets in spacemacs. I am not familar with emacs lisp at all. So it says that I can put the directory in

I'm using org-mode's speed keys alot and I would like to have key sequences as speed keys for ease of remembering. In this case, I want to have "i n" insert a subheading, and "i t" insert a todo subheading.

I know I can setup a sequence by using a prefix keymap like this: