Custom syntax highlighting

For c and quickfix
Function to format the quickfix and location jump lists
Fixed issue with "help" window layouts accessing incorrect variable

config/nvim/after/syntax/c.vim

@@ -0,0 +1,32 @@
+syn clear cTodo
+syn clear cType
+
+" Custom keywords
+"
+syn keyword cStorageClass function export internal global_var thread_var local_persist
+syn keyword cOperator     cast
+
+" Type highlighting
+"
+" There are inconsistencies around this due to the horrific declaration syntax of C/C++ and
+" trying to capture that inside a regexp statement is near impossible. These are made to mostly
+" match the way I format my code.
+"
+syn match cType "\I\i*\ze\s\+\**\I\i*\s*[=;,\)\[]" " Regular declarations
+syn match cType "\I\i*\ze\s\+\**\I\i*("            " Function return types
+
+" Todo notes
+"
+syn match cTodo "@\I\i*\((\I\i*)\)\=:\?" contained
+syn match cNote "\s:\I\i*"               contained
+
+" Functions
+"
+syn match cFunction "\I\i*\ze("
+
+" Contain clusters
+"
+syn cluster cCommentGroup add=cNote
+syn cluster cPreProcGroup add=cFunc,cType
+
+hi def link cFunction Function

config/nvim/after/syntax/qf.vim

@@ -0,0 +1,28 @@
+syn clear
+
+" I have completely overriden the formatting for the quickfix and location list buffers so this
+" has to be changed to give proper highlighting of the new format
+"
+syn match qfSignError  "\[!\]"  contained
+syn match qfSignWarn   "\[#\]"  contained
+syn match qfSignSearch "\[\~\]" contained
+syn match qfFileName   "^[^:]*" contains=@qfSign nextgroup=qfSeparator1
+syn match qfSeparator1 ":"      contained        nextgroup=qfLineNr
+syn match qfLineNr     "[^:|]*" contained        nextgroup=qfSeparator2,qfSeparator3
+syn match qfSeparator2 ":"      contained        nextgroup=qfColumnNr
+syn match qfColumnNr   "[^|]*"  contained
+syn match qfSeparator3 "|"      contained
+
+syn cluster qfSign contains=qfSignError,qfSignWarn,qfSignSearch
+
+hi clear qfFileName
+hi clear qfLineNr
+
+hi def link qfSignError  DiagnosticSignError
+hi def link qfSignWarn   DiagnosticSignWarn
+hi def link qfSignSearch LineNr
+hi def link qfFileName   Function
+hi def link qfLineNr     Number
+hi def link qfColumnNr   Number
+
+let b:current_syntax = "qf"