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-rw-r--r--src/nvim/ex_cmds.c6
-rw-r--r--src/nvim/testdir/test_substitute.vim30
2 files changed, 36 insertions, 0 deletions
diff --git a/src/nvim/ex_cmds.c b/src/nvim/ex_cmds.c
index dd9f8203c1..af92a9c846 100644
--- a/src/nvim/ex_cmds.c
+++ b/src/nvim/ex_cmds.c
@@ -3831,6 +3831,12 @@ static buf_T *do_sub(exarg_T *eap, proftime_T timeout,
sublen = vim_regsub_multi(&regmatch,
sub_firstlnum - regmatch.startpos[0].lnum,
sub, sub_firstline, false, p_magic, true);
+ // If getting the substitute string caused an error, don't do
+ // the replacement.
+ if (aborting()) {
+ goto skip;
+ }
+
// Don't keep flags set by a recursive call
subflags = subflags_save;
if (subflags.do_count) {
diff --git a/src/nvim/testdir/test_substitute.vim b/src/nvim/testdir/test_substitute.vim
index fb31f5779d..2738b00f2f 100644
--- a/src/nvim/testdir/test_substitute.vim
+++ b/src/nvim/testdir/test_substitute.vim
@@ -611,3 +611,33 @@ func Test_sub_replace_10()
call assert_equal('aa2a3a', substitute('123', '1\|\ze', 'a', 'g'))
call assert_equal('1aaa', substitute('123', '1\zs\|[23]', 'a', 'g'))
endfunc
+
+func Test_nocatch_sub_failure_handling()
+ " normal error results in all replacements
+ func! Foo()
+ foobar
+ endfunc
+ new
+ call setline(1, ['1 aaa', '2 aaa', '3 aaa'])
+ %s/aaa/\=Foo()/g
+ call assert_equal(['1 0', '2 0', '3 0'], getline(1, 3))
+
+ " Trow without try-catch causes abort after the first line.
+ " We cannot test this, since it would stop executing the test script.
+
+ " try/catch does not result in any changes
+ func! Foo()
+ throw 'error'
+ endfunc
+ call setline(1, ['1 aaa', '2 aaa', '3 aaa'])
+ let error_caught = 0
+ try
+ %s/aaa/\=Foo()/g
+ catch
+ let error_caught = 1
+ endtry
+ call assert_equal(1, error_caught)
+ call assert_equal(['1 aaa', '2 aaa', '3 aaa'], getline(1, 3))
+
+ bwipe!
+endfunc