From 8293d2ef9165d7f7f30c9dd877a3cb9a25a976f7 Mon Sep 17 00:00:00 2001
From: Bryce Kwon <bryce@brycekwon.com>
Date: Sat, 25 Jul 2026 12:23:25 -1000
Subject: Skip a malformed config line

---
 source/configfile.c | 58 +++++++++++++++++++++++++++++++----------------------
 1 file changed, 34 insertions(+), 24 deletions(-)

diff --git a/source/configfile.c b/source/configfile.c
index aa6c4fa..9bf2da1 100644
--- a/source/configfile.c
+++ b/source/configfile.c
@@ -32,38 +32,48 @@ static void skip_line(FILE *f)
 
 static int read_config_line(FILE *f, struct strbuf *name, struct strbuf *value)
 {
-	int c = next_char(f);
+	int c;
 
-	strbuf_reset(name);
 	strbuf_reset(value);
 
-	/* Skip comments and preceding spaces. */
-	for(;;) {
-		if (c == EOF)
-			return 0;
-		else if (c == '#' || c == ';')
-			skip_line(f);
-		else if (!isspace(c))
-			break;
+	for (;;) {
 		c = next_char(f);
-	}
 
-	/* Read variable name. */
-	while (c != '=') {
-		if (c == '\n' || c == EOF)
-			return 0;
-		strbuf_addch(name, c);
-		c = next_char(f);
-	}
+		// Skip comments and preceding spaces.
+		for (;;) {
+			if (c == EOF)
+				return 0;
+			else if (c == '#' || c == ';')
+				skip_line(f);
+			else if (!isspace(c))
+				break;
+			c = next_char(f);
+		}
 
-	/* Read variable value. */
-	c = next_char(f);
-	while (c != '\n' && c != EOF) {
-		strbuf_addch(value, c);
+		// Read variable name.
+		strbuf_reset(name);
+		while (c != '=') {
+			if (c == EOF)
+				return 0;
+			// A line without '=' is malformed. Skip it and keep
+			// reading so a typo does not drop the rest of the file.
+			if (c == '\n')
+				break;
+			strbuf_addch(name, c);
+			c = next_char(f);
+		}
+		if (c != '=')
+			continue;
+
+		// Read variable value.
 		c = next_char(f);
-	}
+		while (c != '\n' && c != EOF) {
+			strbuf_addch(value, c);
+			c = next_char(f);
+		}
 
-	return 1;
+		return 1;
+	}
 }
 
 int parse_configfile(const char *filename, configfile_value_fn fn)
-- 
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