From 174e77a637e1ab24dd8d96b8afabf1033e884bbd Mon Sep 17 00:00:00 2001
From: Nate Choe <natechoe9@gmail.com>
Date: Mon, 6 Jun 2022 16:42:15 -0500
Subject: [PATCH] Minification exclusion

---
 README.md            | 18 +++++++++++++++++-
 src/include/config.h |  1 +
 src/parse.c          | 10 +++++++---
 3 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index dd294cb..6dc8351 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ Please not that ncdg minifies HTML so these examples aren't really correct.
 
 ## Usage
 
-There are only 3 features in ncdg:
+There are only 4 features in ncdg:
 
 ### Include statements
 
@@ -108,3 +108,19 @@ Result:
 </code></pre>
 
 Note that text inside of escaped sections are not minified.
+
+### Excluding minification
+
+```
+%&
+&
+%
+```
+
+Result:
+
+```
+&
+```
+
+Used for legacy web pages on my site that I don't want to update
diff --git a/src/include/config.h b/src/include/config.h
index 0c0a610..6dfd872 100644
--- a/src/include/config.h
+++ b/src/include/config.h
@@ -3,5 +3,6 @@
 #define VAR_CHAR '!'
 #define SET_CHAR '='
 #define AUTOESCAPE_CHAR '\\'
+#define NOMINIFY_CHAR '&'
 
 #define MAX_INCLUDE_DEPTH 10
diff --git a/src/parse.c b/src/parse.c
index dfcb4d8..ed286ef 100644
--- a/src/parse.c
+++ b/src/parse.c
@@ -105,8 +105,7 @@ static int writefile(struct expandfile *file, FILE *out) {
 			}
 			case AUTOESCAPE_CHAR:
 				for (++i; data->data[i] != ESCAPE_CHAR &&
-						i < data->len;
-						++i) {
+						i < data->len; ++i) {
 					switch (data->data[i]) {
 					case '&':
 						fputs("&amp;", out);
@@ -125,6 +124,11 @@ static int writefile(struct expandfile *file, FILE *out) {
 					}
 				}
 				break;
+			case NOMINIFY_CHAR:
+				for (++i; data->data[i] != ESCAPE_CHAR &&
+						i < data->len; ++i)
+					fputc(data->data[i], out);
+				break;
 			}
 		}
 		else
@@ -161,7 +165,7 @@ static int expandfile(struct expandfile *ret, char *filename, int level) {
 				if (appendchar(ret->data, ESCAPE_CHAR))
 					goto error;
 				break;
-			case VAR_CHAR: case AUTOESCAPE_CHAR:
+			case VAR_CHAR: case AUTOESCAPE_CHAR: case NOMINIFY_CHAR:
 				if (appendchar(ret->data, ESCAPE_CHAR))
 					goto error;
 				for (;;) {