Patch 8.2.3754 (after 8.2.3615)
Problem:    Undesired changing of the indent of the first formatted line.
Solution:   Do not indent the first formatted line.
Files:      src/textformat.c, src/testdir/test_indent.vim


*** ../vim-8.2.3753/src/textformat.c    2021-11-18 13:56:33.603725506 +0000
--- src/textformat.c    2021-12-06 18:05:32.723550030 +0000
***************
*** 954,959 ****
--- 954,960 ----
      int               smd_save;
      long      count;
      int               need_set_indent = TRUE; // set indent of next paragraph
+     linenr_T  first_line = curwin->w_cursor.lnum;
      int               force_format = FALSE;
      int               old_State = State;
  
***************
*** 1073,1080 ****
                {
                    int         indent = 0; // amount of indent needed
  
!                   // replace indent in first line with minimal number of
!                   // tabs and spaces, according to current options
  # ifdef FEAT_LISP
                    if (curbuf->b_p_lisp)
                        indent = get_lisp_indent();
--- 1074,1086 ----
                {
                    int         indent = 0; // amount of indent needed
  
!                   // Replace indent in first line of a paragraph with minimal
!                   // number of tabs and spaces, according to current options.
!                   // For the very first formatted line keep the current
!                   // indent.
!                   if (curwin->w_cursor.lnum == first_line)
!                       indent = get_indent();
!                   else
  # ifdef FEAT_LISP
                    if (curbuf->b_p_lisp)
                        indent = get_lisp_indent();
*** ../vim-8.2.3753/src/testdir/test_indent.vim 2021-11-18 13:56:33.603725506 
+0000
--- src/testdir/test_indent.vim 2021-12-06 19:44:53.151971593 +0000
***************
*** 172,178 ****
          \ 'metus lectus ultrices odio, sed elementum mi ante at arcu.', '', 
'\begin{center}', '',
          \ 'Proin nec risus consequat nunc dapibus consectetur. Mauris lacinia 
est a augue',
          \ 'tristique accumsan. Morbi pretium, felis molestie eleifend 
condimentum, arcu',
!         \ 'ipsum congue nisl, quis euismod purus libero in ante. Donec id 
semper purus.',
          \ 'Suspendisse eget aliquam nunc. Maecenas fringilla mauris vitae 
maximus',
          \ 'condimentum. Cras a quam in mi dictum eleifend at a lorem. Sed 
convallis',
          \ 'ante a commodo facilisis. Nam suscipit vulputate odio, vel dapibus 
nisl',
--- 172,179 ----
          \ 'metus lectus ultrices odio, sed elementum mi ante at arcu.', '', 
'\begin{center}', '',
          \ 'Proin nec risus consequat nunc dapibus consectetur. Mauris lacinia 
est a augue',
          \ 'tristique accumsan. Morbi pretium, felis molestie eleifend 
condimentum, arcu',
!         \ 'ipsum congue nisl, quis euismod purus libero in ante.', '',
!         \ 'Donec id semper purus.',
          \ 'Suspendisse eget aliquam nunc. Maecenas fringilla mauris vitae 
maximus',
          \ 'condimentum. Cras a quam in mi dictum eleifend at a lorem. Sed 
convallis',
          \ 'ante a commodo facilisis. Nam suscipit vulputate odio, vel dapibus 
nisl',
***************
*** 181,190 ****
    1d_
    call cursor(5, 1)
    ka
!   call cursor(15, 1)
    kb
    norm! 'agqap
!   norm! 'bgqap
    let expected = [ '\documentclass{article}', '', '\begin{document}', '',
          \ 'Lorem ipsum dolor sit amet, consectetur adipiscing',
          \ 'elit. Fusce ut enim non libero efficitur aliquet.',
--- 182,191 ----
    1d_
    call cursor(5, 1)
    ka
!   call cursor(14, 1)
    kb
    norm! 'agqap
!   norm! 'bgqG
    let expected = [ '\documentclass{article}', '', '\begin{document}', '',
          \ 'Lorem ipsum dolor sit amet, consectetur adipiscing',
          \ 'elit. Fusce ut enim non libero efficitur aliquet.',
***************
*** 201,209 ****
          \ '  consectetur. Mauris lacinia est a augue',
          \ '  tristique accumsan. Morbi pretium, felis',
          \ '  molestie eleifend condimentum, arcu ipsum congue',
!         \ '  nisl, quis euismod purus libero in ante. Donec',
!         \ '  id semper purus.  Suspendisse eget aliquam nunc.',
!         \ '  Maecenas fringilla mauris vitae maximus',
          \ '  condimentum. Cras a quam in mi dictum eleifend',
          \ '  at a lorem. Sed convallis ante a commodo',
          \ '  facilisis. Nam suscipit vulputate odio, vel',
--- 202,211 ----
          \ '  consectetur. Mauris lacinia est a augue',
          \ '  tristique accumsan. Morbi pretium, felis',
          \ '  molestie eleifend condimentum, arcu ipsum congue',
!         \ '  nisl, quis euismod purus libero in ante.',
!         \ '',
!         \ '  Donec id semper purus.  Suspendisse eget aliquam',
!         \ '  nunc. Maecenas fringilla mauris vitae maximus',
          \ '  condimentum. Cras a quam in mi dictum eleifend',
          \ '  at a lorem. Sed convallis ante a commodo',
          \ '  facilisis. Nam suscipit vulputate odio, vel',
***************
*** 217,220 ****
--- 219,246 ----
    delfunction GetTeXIndent 
  endfu
  
+ func Test_formatting_keeps_first_line_indent()
+   let lines =<< trim END
+       foo()
+       {
+           int x;         // manually positioned
+                          // more text that will be formatted
+                          // but not reindented
+   END
+   new
+   call setline(1, lines)
+   setlocal sw=4 cindent tw=45 et
+   normal! 4Ggqj
+   let expected =<< trim END
+       foo()
+       {
+           int x;         // manually positioned
+                          // more text that will be
+                          // formatted but not
+                          // reindented
+   END
+   call assert_equal(expected, getline(1, '$'))
+   bwipe!
+ endfunc
+ 
  " vim: shiftwidth=2 sts=2 expandtab
*** ../vim-8.2.3753/src/version.c       2021-12-06 15:06:49.335517805 +0000
--- src/version.c       2021-12-06 19:50:26.222736276 +0000
***************
*** 755,756 ****
--- 755,758 ----
  {   /* Add new patch number below this line */
+ /**/
+     3754,
  /**/

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