From 0b97925fb8e916e14635c6ece5138a3008e7f8d3 Mon Sep 17 00:00:00 2001
From: Thomas Schmucker <ts@its1.de>
Date: Fri, 6 Mar 2026 12:26:49 +0100
Subject: neovim: calender kann nun auch das Datum aktualisieren

---
 nvim/lua/plugins/ui.lua | 45 ++++++++++++++++++++++++++++++++++-----------
 1 file changed, 34 insertions(+), 11 deletions(-)

(limited to 'nvim')

diff --git a/nvim/lua/plugins/ui.lua b/nvim/lua/plugins/ui.lua
index 502c271..22c0c3a 100644
--- a/nvim/lua/plugins/ui.lua
+++ b/nvim/lua/plugins/ui.lua
@@ -64,18 +64,41 @@ return {
     "mattn/calendar-vim",
     config = function()
       vim.cmd([[
-        function! CalendarInsertDate(day, month, year, week, dir)
-          let date = printf("%04d-%02d-%02d", a:year, a:month, a:day)
-          wincmd q
-          wincmd p
-          execute "normal! a" . date
-        endfunction
-        let calendar_action = 'CalendarInsertDate'
+      function! CalendarInsertDate(day, month, year, week, dir)
+      let date = printf("%04d-%02d-%02d", a:year, a:month, a:day)
 
-        let g:calendar_monday = 1
-        let g:calendar_wruler = 'So Mo Di Mi Do Fr Sa'
-        let g:calendar_mruler = 'Jan,Feb,Mär,Apr,Mai,Jun,Jul,Aug,Sep,Okt,Nov,Dez'
-        let g:calendar_weeknm = 4
+      " Kalenderfenster schließen und zum vorherigen Fenster zurück
+      wincmd q
+      wincmd p
+
+      let pattern = '\v\d{4}-\d{2}-\d{2}'
+      let line = getline('.')
+      let col = col('.')
+
+      " Prüfen ob Cursor innerhalb eines Datums steht
+      let start = match(line, pattern)
+
+      while start >= 0
+      let end = start + strlen(matchstr(line[start:], pattern))
+      if col >= start + 1 && col <= end
+      " Datum ersetzen
+      call setline('.', line[:start-1] . date . line[end:])
+      call cursor('.', start + strlen(date))
+      return
+      endif
+      let start = match(line, pattern, end)
+      endwhile
+
+      " Kein Datum unter Cursor → wie bisher einfügen
+      execute "normal! a" . date
+      endfunction
+
+      let calendar_action = 'CalendarInsertDate'
+
+      let g:calendar_monday = 1
+      let g:calendar_wruler = 'So Mo Di Mi Do Fr Sa'
+      let g:calendar_mruler = 'Jan,Feb,Mär,Apr,Mai,Jun,Jul,Aug,Sep,Okt,Nov,Dez'
+      let g:calendar_weeknm = 4
       ]])
     end,
   },
-- 
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