From a1605672d94f350ecd764281211774cbcd72d09e Mon Sep 17 00:00:00 2001
From: Bruce Hill <bruce@bruce-hill.com>
Date: Sat, 9 Mar 2024 23:16:23 -0500
Subject: [PATCH] Add explicit check for space indentation

---
 parse.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/parse.c b/parse.c
index f8e7949..bed73e0 100644
--- a/parse.c
+++ b/parse.c
@@ -989,8 +989,6 @@ PARSER(parse_text) {
         return NULL;
     }
 
-    // printf("Parsing string: '%c' .. '%c' interp: '%c%c'\n", *start, close_quote, open_interp, close_interp);
-
     int64_t starting_indent = get_indent(ctx->file, pos);
     int64_t string_indent = starting_indent + 1;
 
@@ -1455,6 +1453,12 @@ PARSER(parse_block) {
     whitespace(&pos);
     ast_list_t *statements = NULL;
     while (*pos) {
+        if (pos > start && pos[-1] == ' ') {
+            const char *space_start = pos-1;
+            while (*space_start == ' ')
+                --space_start;
+            parser_err(ctx, space_start, pos, "Spaces are not allowed for indentation, only tabs!");
+        }
         ast_t *stmt = optional(ctx, &pos, parse_statement);
         if (!stmt) {
             const char *line_start = pos;