I have updated and checked the syntax highlighting of AppArmor with various improvements. I decided to do it in this old diff (changes to SELinux are no longer included, I prefer to do it in the future).
Changes in AppArmor:
* **AppArmor 2.13**: adds "if exists" in Include rules. Ex: `#include if exists <path>`. Previously, the text after "include" was highlighted as "Error", that is corrected.
* Fix: allow spaces in relative paths, in Include rules.
* Fix escape characters: add decimals (`\dNNN`) and only valid octales are highlighted (the maximum value is `\400`). Any character is also highlighted as escape (literal characters). Before, only special characters are highlighted.
* Improves the detection of paths that start with a variable. For example, when writing a variable and then a non-ASCII character, it is highlighted as path (Ex: `@{VAR}ñpath*`).
* Improve variable assignment lines:
* Add line continuation escape.
* Allow assignment (`=` or `+=`) in a new line.
* Removes unnecessary rules in `_variable_assignment_line_content` context. Now the entire line is highlighted as path.
* Improve the highlighting of Hats/Sub-profiles (`name//HAT`). Add hats in quoted paths and transition profile names (before it was only highlighted in paths). The itemData "SubProfile" changes to "SubProfile/Hat".
* Improve comments: underlines URLs and e-mails.
* Add extensions `snap.*`, `snap-update-ns.*` & `snap-confine.*` (these are the prefixes of the AppArmor profiles for the Snap packages. Some are located in "/var/lib/snapd/apparmor").
* Add some filesystems, new abstractions and "xattrs" flag (keywords).
* Add paths that start with namespaces: `:namespace:/path`.
* Fixes globbing brackets in quoted text. Now the bracket content allows spaces and line breaks.
* Fix the escape of "/" in profile name and transition profile name (before, it is highlighted as path).
* Simplifies the closing of rules (comma of end of rules).
* The code to detect variables & booleans is simplified.
* Fix booleans: true & false keywords are insensitive; booleans will not be highlighted within rules.
* The operators "in" & "to" are put in a different context (`_operators_keywords`). Now these are only highlighted within the AppArmor-rules.
* Removes unnecessary RegExpr rules in the path detection. Now only the "/" character marks the beginning of a path.
* The special character "^" is only highlighted at the beginning of the square bracket. Ex: `[^ ...]`
* Improves the highlighting of numerical units in rlimit rules (a word boundary is added at the beginning if there is no number before).
* Unnecessary attributes are deleted in `ItemData`'s (Ex: underline=0, italic=0)
* Some itemData have bad names ("Globbing Char 1", "Globbing Char 2", "Globbing Char 3"), so these change their name.
* Globbing brackets change in style, from "dsSpecialString" to "dsVerbatimString", since in the "Normal" scheme the red color is more discreet than the orange color.
* Removes unnecessary `insensitive` attributes in some rules.
In the file I also made some minor modifications to order the code and it is less chaotic, since the file is very large.
I have tested the file enough and I can say that it works well.
Any inconvenience (such as adding extensions) do not hesitate to notify!
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**Old diff:**
AppArmor:
* Add the profile flag 'xattrs' keyword (for future versions of AppArmor).
* Allow any character as escape.
* Improvements in the Boolean assignment (for future versions of AppArmor).
SELinux:
* Improvements in the highlighting of Regex.