# HG changeset patch
# User David Demelier <markand@malikania.fr>
# Date 1567280642 -7200
# Node ID cb7532847b08613919a9e80fc6e15fbec4448ed8
# Parent  54496ac5164975d389c8e7d1977f0d8c0d9a9b06
irccd: fix invalid template, closes #2250

diff -r 54496ac51649 -r cb7532847b08 CHANGES.md
--- a/CHANGES.md	Fri Aug 30 21:03:00 2019 +0200
+++ b/CHANGES.md	Sat Aug 31 21:44:02 2019 +0200
@@ -1,6 +1,12 @@
 IRC Client Daemon CHANGES
 =========================
 
+irccd 3.0.1 2019-09-01
+----------------------
+
+- Fixed an invalid template escape sequence (#2250),
+- Updated the default configuration files (#2249).
+
 irccd 3.0.0 2019-08-15
 ----------------------
 
diff -r 54496ac51649 -r cb7532847b08 doc/examples/irccd.conf.sample
--- a/doc/examples/irccd.conf.sample	Fri Aug 30 21:03:00 2019 +0200
+++ b/doc/examples/irccd.conf.sample	Sat Aug 31 21:44:02 2019 +0200
@@ -60,7 +60,7 @@
 # command-char = "!"            # (string) the prefix for invoking special commands (Optional, default: !),
 # ssl = false                   # (bool) enable or disable SSL (Optional, default: false),
 # auto-reconnect = true         # (bool) enable reconnection after failure (Optional, default: true),
-# auto-reconnect-timeout = 5    # (int) number of seconds to wait before retrying (Optional, default: 30).
+# auto-reconnect-delay = 5      # (int) number of seconds to wait before retrying (Optional, default: 30).
 
 [server]
 name = "localhost"
@@ -139,9 +139,9 @@
 # To format general messages:
 #
 # [templates]
-# debug = "DD #{messages}       # (string) debug messages.
-# info = "II #{messages}        # (string) information messages.
-# warning = "WW #{messages}     # (string) warning messages.
+# debug = "DD #{message}        # (string) debug messages.
+# info = "II #{message}         # (string) information messages.
+# warning = "WW #{message}      # (string) warning messages.
 #
 # To format specific plugins:
 #
diff -r 54496ac51649 -r cb7532847b08 libirccd/irccd/string_util.cpp
--- a/libirccd/irccd/string_util.cpp	Fri Aug 30 21:03:00 2019 +0200
+++ b/libirccd/irccd/string_util.cpp	Sat Aug 31 21:44:02 2019 +0200
@@ -327,7 +327,7 @@
 	std::ostringstream oss;
 
 	for (auto it = text.cbegin(), end = text.cend(); it != end; ) {
-		auto token = *it;
+		const auto token = *it;
 
 		// Is the current character a reserved token or not?
 		if (!is_reserved(token)) {
@@ -341,36 +341,22 @@
 			continue;
 		}
 
-		// The token is declaring a template variable, substitute it.
-		if (*it == '{') {
-			oss << substitute(++it, end, token, params);
-			continue;
-		}
+		/*
+		 * ## -> #
+		 * #{key} -> value (if key == value)
+		 * ##{key} -> #{key}
+		 * ###{key} -> #value (if key == value)
+		 * @#{key} -> @vlalue (if key == value)
+		 */
 
-		/*
-		 * If the next token is different from the previous one, just let the
-		 * next iteration parse the string because we can have the following
-		 * constructs.
-		 *
-		 * "@#{var}" -> "@value"
-		 */
-		if (*it != token) {
+		if (*it == '{')
+			oss << substitute(++it, end, token, params);
+		else {
+			if (*it == token)
+				++it;
+
 			oss << token;
-			continue;
 		}
-
-		/*
-		 * Write the token only if it's not a variable because at this step we
-		 * may have the following constructs.
-		 *
-		 * "##" -> "##"
-		 * "##hello" -> "##hello"
-		 * "##{hello}" -> "#{hello}"
-		 */
-		if (++it == end)
-			oss << token << token;
-		else if (*it == '{')
-			oss << token;
 	}
 
 	return oss.str();
diff -r 54496ac51649 -r cb7532847b08 man/irccd-templates.7
--- a/man/irccd-templates.7	Fri Aug 30 21:03:00 2019 +0200
+++ b/man/irccd-templates.7	Sat Aug 31 21:44:02 2019 +0200
@@ -189,7 +189,8 @@
 Valid constructs:
 .Bl -tag -width 20n -offset Ds
 .It #{target}, welcome
-if target is set to "irccd", becomes "irccd, welcome".
+if target is set to "irccd", becomes
+.Dq "irccd, welcome" .
 .It @{red}#{target}
 if target is specified, it is written in red.
 .El
@@ -197,13 +198,21 @@
 Invalid or literals constructs:
 .Bl -tag -width 20n -offset Ds
 .It ##{target}
-will output "#{target}".
-.It ##
-will output "##".
+will output
+.Dq #{target} .
+.It abc##xyz
+will output
+.Dq abc#xyz .
 .It #target
-will output "#target".
+will output
+.Dq #target .
 .It #{target
 will cause an error.
+.It @#{message}
+will output
+.Dq @bar
+if message keyword is set to
+.Dq bar .
 .El
 .Pp
 Colors & attributes:
diff -r 54496ac51649 -r cb7532847b08 tests/src/libirccd/string-util/main.cpp
--- a/tests/src/libirccd/string-util/main.cpp	Fri Aug 30 21:03:00 2019 +0200
+++ b/tests/src/libirccd/string-util/main.cpp	Sat Aug 31 21:44:02 2019 +0200
@@ -51,7 +51,7 @@
 	BOOST_TEST(string_util::format("#") == "#");
 	BOOST_TEST(string_util::format(" # ") == " # ");
 	BOOST_TEST(string_util::format("#@") == "#@");
-	BOOST_TEST(string_util::format("##") == "##");
+	BOOST_TEST(string_util::format("##") == "#");
 	BOOST_TEST(string_util::format("#!") == "#!");
 	BOOST_TEST(string_util::format("##{target}") == "#{target}");
 	BOOST_TEST(string_util::format("@#{target}", params) == "@hello");
@@ -152,6 +152,17 @@
 	BOOST_TEST(expected == result);
 }
 
+BOOST_AUTO_TEST_CASE(fix_2250)
+{
+	string_util::subst params;
+
+	params.keywords.insert({"target", "irccd"});
+
+	BOOST_TEST(string_util::format("abc##xyz") == "abc#xyz");
+	BOOST_TEST(string_util::format("abc###xyz") == "abc##xyz");
+	BOOST_TEST(string_util::format("###{target}", params) == "#irccd");
+}
+
 BOOST_AUTO_TEST_SUITE_END()
 
 /*