Re: [Nano-devel] nano bug #54928: a syntax file should be fully read only when the syntax gets actually used

[Devin Hussey]

rcfile.c and color.c are your main points of entry.

Namely...
 - color.c -> update_colors
 - rcfile.c -> grab_and_store
 - rcfile.c -> parse_rcfile
 - rcfile.c -> parse_colors

The main issue with this is that we parse the rcfiles before the file
is even opened, which makes things a little complicated.

1. parse_rcfile reads every rc file included.
2. grab_and_store will store the extension, magic, and header to the
static variable live_syntaxes, which will be linked into
openfilestruct::syntax.
3. parse_colors reads every color file and stores it as a string
(after regcomping and regfreeing it immediately simply to check
syntax) in syntaxtype
4. The file is opened.
5. update_colors will scan through the list of syntaxes, check if the
header/magic/extension matches (again by regcomping/regfreeing
immediately), then compile the matching regex.