From 4854d00dc2458bcc0725624af3a15c58f773f5cb Mon Sep 17 00:00:00 2001
From: simonz <151792307+rpi-simonz@users.noreply.github.com>
Date: Sat, 13 Sep 2025 21:52:15 +0200
Subject: [PATCH 1/3] Avoid trailing newline after translation of a linewise
 selection

Workaround: Change linewise selection to characterwise.
---
 autoload/deepl.vim | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/autoload/deepl.vim b/autoload/deepl.vim
index 44db456..79809f5 100644
--- a/autoload/deepl.vim
+++ b/autoload/deepl.vim
@@ -25,6 +25,12 @@ function! deepl#v(target_lang, source_lang = "")
   let l:paste = &paste
   set paste
 
+  " Avoid superfluous trailing newline after translating a visual linewise
+  " selection by changing it to a characterwise selection.
+  if mode() == "V"
+    execute "normal! \<ESC>`<v`>h\<ESC>gv"
+  endif
+
   try
     " Apply transformation to the text
     if a:source_lang == ""

From 1c80e3ed6ff57c7ab43d32c5782a6025320624b0 Mon Sep 17 00:00:00 2001
From: rpi-simonz <simonz@mailbox.org>
Date: Wed, 28 Jan 2026 22:10:37 +0100
Subject: [PATCH 2/3] Deactivate woarkaround again. No longer needed.

---
 autoload/deepl.vim | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/autoload/deepl.vim b/autoload/deepl.vim
index bef4178..f51735e 100644
--- a/autoload/deepl.vim
+++ b/autoload/deepl.vim
@@ -14,6 +14,14 @@ function! deepl#translate(input, target_lang, source_lang = "")
   let cmd = cmd .. ' -d ' .. shellescape(json_encode(data))
 
   try
+    " Note: Somewhere in Q4/2025-Q1/2026 DeepL seems to have changed the API
+    "       and since then all(?) newlines are translated to spaces in the
+    "       reply.
+    "       So the measure below for the trailing newline is no longer needed.
+    "
+    " {"target_lang":"EN","text":["Zeile1\nZeile2\n"]}
+    " ==>
+    " {"translations":[{"text":"Line1 Line2 ","detected_source_language":"DE"}]}
     const res = json_decode(system(cmd))
     return res["translations"][0]["text"]
 
@@ -31,9 +39,9 @@ function! deepl#v(target_lang, source_lang = "")
 
   " Avoid superfluous trailing newline after translating a visual linewise
   " selection by changing it to a characterwise selection.
-  if mode() == "V"
-    execute "normal! \<ESC>`<v`>h\<ESC>gv"
-  endif
+  "if mode() == "V"
+  "  execute "normal! \<ESC>`<v`>h\<ESC>gv"
+  "endif
 
   try
     " Apply transformation to the text

From b99352b39926bfaa5077744f6e5d0e116a8d058b Mon Sep 17 00:00:00 2001
From: rpi-simonz <simonz@mailbox.org>
Date: Thu, 29 Jan 2026 09:31:49 +0100
Subject: [PATCH 3/3] Improve paragraph handling.

---
 autoload/deepl.vim | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/autoload/deepl.vim b/autoload/deepl.vim
index f51735e..2e83aee 100644
--- a/autoload/deepl.vim
+++ b/autoload/deepl.vim
@@ -1,7 +1,7 @@
 " Send a translation request to deepl using curl
 function! deepl#translate(input, target_lang, source_lang = "")
   let data = #{
-        \ text: [a:input],
+        \ text: split(a:input, '\n\n'),
         \ target_lang: a:target_lang,
         \ }
   if a:source_lang != ""
@@ -17,13 +17,24 @@ function! deepl#translate(input, target_lang, source_lang = "")
     " Note: Somewhere in Q4/2025-Q1/2026 DeepL seems to have changed the API
     "       and since then all(?) newlines are translated to spaces in the
     "       reply.
-    "       So the measure below for the trailing newline is no longer needed.
+    "       So the workaround below for the trailing newline is no longer needed.
     "
     " {"target_lang":"EN","text":["Zeile1\nZeile2\n"]}
     " ==>
     " {"translations":[{"text":"Line1 Line2 ","detected_source_language":"DE"}]}
     const res = json_decode(system(cmd))
-    return res["translations"][0]["text"]
+    " But now the preformatting (via newlines) gets lost...
+    "
+    " This is fixed here by splitting the text on double newlines (paragraph
+    " boundaries) above and join it after translation again the same way.
+    "
+    let res2 = []
+    for p in res["translations"]
+      call add(res2, p["text"])
+    endfor
+    " Remove final trailing space character
+    " (needed when translating a visual linewise block)
+    return substitute(join(res2, "\n\n"), " $", "", "")
 
   catch /.*/
     echoerr "error: " .. v:exception
@@ -37,6 +48,7 @@ function! deepl#v(target_lang, source_lang = "")
   let l:paste = &paste
   set paste
 
+  " Workaround no longer needed, see above.
   " Avoid superfluous trailing newline after translating a visual linewise
   " selection by changing it to a characterwise selection.
   "if mode() == "V"