Fix end line number when it exceeds the file (#4130) v3.2.x

If the end of the error exceeds the file, set it to the last line,
similarly as it is done with the beginning of the error.

2 files changed, 14 insertions, 7 deletions

diff --git a/autoload/ale/engine.vim b/autoload/ale/engine.vim
index 5b9b1fca6..00789a2d2 100644
--- a/autoload/ale/engine.vim
+++ b/autoload/ale/engine.vim
@@ -347,6 +347,12 @@ function! ale#engine#FixLocList(buffer, linter_name, from_other_source, loclist)
 
         if has_key(l:old_item, 'end_lnum')
             let l:item.end_lnum = str2nr(l:old_item.end_lnum)
+
+            " When the error ends after the end of the file, put it at the
+            " end. This is only done for the current buffer.
+            if l:item.bufnr == a:buffer && l:item.end_lnum > l:last_line_number
+                let l:item.end_lnum = l:last_line_number
+            endif
         endif
 
         if has_key(l:old_item, 'sub_type')
diff --git a/test/test_loclist_corrections.vader b/test/test_loclist_corrections.vader
index d53b1411d..60b1eba7b 100644
--- a/test/test_loclist_corrections.vader
+++ b/test/test_loclist_corrections.vader
@@ -124,6 +124,7 @@ Execute(FixLocList should set items with lines beyond the end to the last line):
   \     'text': 'a',
   \     'lnum': 10,
   \     'col': 0,
+  \     'end_lnum': 10,
   \     'bufnr': bufnr('%'),
   \     'vcol': 0,
   \     'type': 'E',
@@ -135,7 +136,7 @@ Execute(FixLocList should set items with lines beyond the end to the last line):
   \   bufnr('%'),
   \   'foobar',
   \   0,
-  \   [{'text': 'a', 'lnum': 11}],
+  \   [{'text': 'a', 'lnum': 11, 'end_lnum': 12}],
   \ )
 
 Execute(FixLocList should move line 0 to line 1):
@@ -223,9 +224,9 @@ Execute(FixLocList should pass on end_lnum values):
   \ [
   \   {
   \     'text': 'a',
-  \     'lnum': 10,
+  \     'lnum': 7,
   \     'col': 10,
-  \     'end_lnum': 13,
+  \     'end_lnum': 10,
   \     'end_col': 12,
   \     'bufnr': bufnr('%'),
   \     'vcol': 0,
@@ -235,9 +236,9 @@ Execute(FixLocList should pass on end_lnum values):
   \   },
   \   {
   \     'text': 'a',
-  \     'lnum': 10,
+  \     'lnum': 7,
   \     'col': 11,
-  \     'end_lnum': 13,
+  \     'end_lnum': 10,
   \     'end_col': 12,
   \     'bufnr': bufnr('%'),
   \     'vcol': 0,
@@ -251,8 +252,8 @@ Execute(FixLocList should pass on end_lnum values):
   \   'foobar',
   \   0,
   \   [
-  \     {'text': 'a', 'lnum': '010', 'col': '010', 'end_col': '012', 'end_lnum': '013'},
-  \     {'text': 'a', 'lnum': '010', 'col': '011', 'end_col': 12, 'end_lnum': 13},
+  \     {'text': 'a', 'lnum': '07', 'col': '010', 'end_col': '012', 'end_lnum': '010'},
+  \     {'text': 'a', 'lnum': '07', 'col': '011', 'end_col': 12, 'end_lnum': 10},
   \   ],
   \ )