lib: fix reporting source context lines at EOF

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/custom/03_bugs/14_incomplete_expression_at_eof b/tests/custom/03_bugs/14_incomplete_expression_at_eof
new file mode 100644
index 0000000..474e87c
--- /dev/null
+++ b/tests/custom/03_bugs/14_incomplete_expression_at_eof
@@ -0,0 +1,16 @@
+When an incomplete expression was parsed at the very end of the input
+buffer, the source code context line was not properly printed.
+
+-- Expect stderr --
+Syntax error: Expecting expression
+In line 1, byte 7:
+
+ `{% 1+`
+       ^-- Near here
+
+
+-- End --
+
+-- Testcase --
+{% 1+
+-- End --