+errtags

vim/.vim/plugin/errtags.vim

@@ -0,0 +1,99 @@
+" --- Define our prop types ---
+" #pragma region
+call prop_type_delete('ErrtagsHighlight')
+call prop_type_delete('ErrtagsMessage')
+
+hi link ErrTagsError   ErrorMsg
+hi link ErrTagsMessage Comment
+
+call prop_type_add('ErrtagsHighlight', {
+      \ 'highlight': 'ErrTagsError',
+      \ })
+
+call prop_type_add('ErrtagsMessage', {
+      \ 'highlight': 'ErrTagsMessage',
+      \ })
+" #pragma endregion
+
+" --- Main logic ---
+" #pragma region
+function! AddErrtagsNotice(lnum, col, message)
+  try " NOTE: the column might have been deleted, thats no excuse to halt and catch fire
+    call prop_add(a:lnum, a:col, {
+          \ 'type': 'ErrtagsHighlight',
+          \ 'length': 1
+          \ })
+  catch /E964/ | endtry
+
+    call prop_add(a:lnum, 0, {
+          \ 'type': 'ErrtagsMessage',
+          \ 'text': ' # E: ' . a:message,
+          \ 'text_align': 'after'
+          \ })
+endfunction
+
+function AddErrtagsNotices(notices)
+    for l:notice in a:notices
+        if l:notice['fname'] == expand('%:t')
+            call AddErrtagsNotice(l:notice.lnum, l:notice.col, l:notice.text)
+        endif
+    endfor
+endfunction
+
+function! ParseErrtagsNotices(lines)
+    let l:errors = []
+
+    for l:line in a:lines
+        let l:fields = split(l:line, ':')
+
+        if len(l:fields) >= 2
+            let l:filename = l:fields[0]
+            let l:line_number = l:fields[1]
+            let l:column_number = l:fields[2]
+            let l:message = join(l:fields[3:], ':')
+
+            call add(l:errors, {
+            \ 'fname': l:filename,
+            \ 'lnum':  l:line_number,
+            \ 'col':   l:column_number,
+            \ 'text':  l:message,
+            \ 'type':  'E',
+            \ })
+        endif
+    endfor
+
+    return l:errors
+endfunction
+
+function! DoErrtagsNotices()
+    call prop_remove({ 'type': 'ErrtagsHighlight' })
+    call prop_remove({ 'type': 'ErrtagsMessage' })
+
+    try
+        let l:lines = readfile(g:errtags_cache)
+    catch /E484/
+        return
+    endtry
+
+    let l:notices = ParseErrtagsNotices(l:lines)
+
+    call AddErrtagsNotices(l:notices)
+endfunction
+" #pragma endregion
+
+" --- Hook up everything ---
+" #pragma region
+if exists('g:errtags_events')
+	for e in g:errtags_events
+		execute "autocmd " . e . " * DoErrtagsNotices"
+	endfor
+endif
+
+if expand('$ERRTAGS_CACHE_FILE') != '$ERRTAGS_CACHE_FILE'
+    let g:errtags_cache = expand('$ERRTAGS_CACHE_FILE')
+else
+    let g:errtags_cache = expand('$XDG_CACHE_HOME/errtags.tags')
+endif
+
+command! DoErrtagsNotices :call DoErrtagsNotices()
+" #pragma endregion

vim/.vimrc

@@ -262,6 +262,8 @@
     let g:hitags_events = ["BufWrite"]
     let g:sigs_events   = ["BufWrite"]
 
+    let g:errtags_events = ["BufEnter", "BufWrite"]
+
 " -------------
 " ### NETRW ###
 " -------------