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-rw-r--r--src/nvim/ex_cmds.c15
-rw-r--r--src/nvim/testdir/test_sort.vim55
2 files changed, 60 insertions, 10 deletions
diff --git a/src/nvim/ex_cmds.c b/src/nvim/ex_cmds.c
index aaa4dbdfb7..892458dab7 100644
--- a/src/nvim/ex_cmds.c
+++ b/src/nvim/ex_cmds.c
@@ -424,6 +424,7 @@ void ex_sort(exarg_T *eap)
sort_abort = sort_ic = sort_rx = sort_nr = sort_flt = 0;
size_t format_found = 0;
+ bool change_occurred = false; // Buffer contents changed.
for (p = eap->arg; *p != NUL; ++p) {
if (ascii_iswhite(*p)) {
@@ -585,7 +586,15 @@ void ex_sort(exarg_T *eap)
// Insert the lines in the sorted order below the last one.
lnum = eap->line2;
for (i = 0; i < count; ++i) {
- s = ml_get(nrs[eap->forceit ? count - i - 1 : i].lnum);
+ const linenr_T get_lnum = nrs[eap->forceit ? count - i - 1 : i].lnum;
+
+ // If the original line number of the line being placed is not the same
+ // as "lnum" (accounting for offset), we know that the buffer changed.
+ if (get_lnum + ((linenr_T)count - 1) != lnum) {
+ change_occurred = true;
+ }
+
+ s = ml_get(get_lnum);
if (!unique || i == 0
|| (sort_ic ? STRICMP(s, sortbuf1) : STRCMP(s, sortbuf1)) != 0) {
// Copy the line into a buffer, it may become invalid in
@@ -617,7 +626,9 @@ void ex_sort(exarg_T *eap)
} else if (deleted < 0) {
mark_adjust(eap->line2, MAXLNUM, -deleted, 0L, false);
}
- changed_lines(eap->line1, 0, eap->line2 + 1, -deleted, true);
+ if (change_occurred || deleted != 0) {
+ changed_lines(eap->line1, 0, eap->line2 + 1, -deleted, true);
+ }
curwin->w_cursor.lnum = eap->line1;
beginline(BL_WHITE | BL_FIX);
diff --git a/src/nvim/testdir/test_sort.vim b/src/nvim/testdir/test_sort.vim
index 4fddb47b58..6dc1d468c0 100644
--- a/src/nvim/testdir/test_sort.vim
+++ b/src/nvim/testdir/test_sort.vim
@@ -1,13 +1,13 @@
-" Test sort()
+" Tests for the "sort()" function and for the ":sort" command.
-:func Compare1(a, b) abort
+func Compare1(a, b) abort
call sort(range(3), 'Compare2')
return a:a - a:b
-:endfunc
+endfunc
-:func Compare2(a, b) abort
+func Compare2(a, b) abort
return a:a - a:b
-:endfunc
+endfunc
func Test_sort_strings()
" numbers compared as strings
@@ -45,7 +45,7 @@ func Test_sort_default()
call assert_fails('call sort([3.3, 1, "2"], 3)', "E474")
endfunc
-" Tests for the :sort command
+" Tests for the ":sort" command.
func Test_sort_cmd()
let tests = [
\ {
@@ -1167,15 +1167,54 @@ func Test_sort_cmd()
\ '1.234',
\ '123.456'
\ ]
- \ }
+ \ },
+ \ {
+ \ 'name' : 'alphabetical, sorted input',
+ \ 'cmd' : 'sort',
+ \ 'input' : [
+ \ 'a',
+ \ 'b',
+ \ 'c',
+ \ ],
+ \ 'expected' : [
+ \ 'a',
+ \ 'b',
+ \ 'c',
+ \ ]
+ \ },
+ \ {
+ \ 'name' : 'alphabetical, sorted input, unique at end',
+ \ 'cmd' : 'sort u',
+ \ 'input' : [
+ \ 'aa',
+ \ 'bb',
+ \ 'cc',
+ \ 'cc',
+ \ ],
+ \ 'expected' : [
+ \ 'aa',
+ \ 'bb',
+ \ 'cc',
+ \ ]
+ \ },
\ ]
for t in tests
enew!
call append(0, t.input)
$delete _
- exe t.cmd
+ setlocal nomodified
+ execute t.cmd
+
call assert_equal(t.expected, getline(1, '$'), t.name)
+
+ " Previously, the ":sort" command would set 'modified' even if the buffer
+ " contents did not change. Here, we check that this problem is fixed.
+ if t.input == t.expected
+ call assert_false(&modified, t.name . ': &mod is not correct')
+ else
+ call assert_true(&modified, t.name . ': &mod is not correct')
+ endif
endfor
call assert_fails('sort no', 'E474')