From 77c135349aaaa026c3fbb24d291877ce926d682e Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Fri, 4 Nov 2022 08:03:23 +0000
Subject: [PATCH] Unescape the string for the literal operator (l:) so special
 characters work.

---
 format.c | 30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

diff --git a/format.c b/format.c
index 535af061..5b08a7a4 100644
--- a/format.c
+++ b/format.c
@@ -3575,7 +3575,32 @@ found:
 	return (found);
 }
 
-/* Remove escaped characters from string. */
+/* Unescape escaped characters. */
+static char *
+format_unescape(const char *s)
+{
+	char	*out, *cp;
+	int	 brackets = 0;
+
+	cp = out = xmalloc(strlen(s) + 1);
+	for (; *s != '\0'; s++) {
+		if (*s == '#' && s[1] == '{')
+			brackets++;
+		if (brackets == 0 &&
+		    *s == '#' &&
+		    strchr(",#{}:", s[1]) != NULL) {
+			*cp++ = *++s;
+ 			continue;
+		}
+		if (*s == '}')
+			brackets--;
+		*cp++ = *s;
+	}
+	*cp = '\0';
+	return (out);
+}
+
+/* Remove escaped characters. */
 static char *
 format_strip(const char *s)
 {
@@ -4338,7 +4363,8 @@ format_replace(struct format_expand_state *es, const char *key, size_t keylen,
 
 	/* Is this a literal string? */
 	if (modifiers & FORMAT_LITERAL) {
-		value = xstrdup(copy);
+		format_log(es, "literal string is '%s'", copy);
+		value = format_unescape(copy);
 		goto done;
 	}