kmx.io/prism.js

diff --git a/components/prism-bash.js b/components/prism-bash.js
index 32cb155..a68fab2 100644
--- a/components/prism-bash.js
+++ b/components/prism-bash.js
@@ -107,7 +107,7 @@
 		'string': [
 			// Support for Here-documents https://en.wikipedia.org/wiki/Here_document
 			{
-				pattern: /((?:^|[^<])<<-?\s*)(\w+?)\s*(?:\r?\n|\r)(?:[\s\S])*?(?:\r?\n|\r)\2/,
+				pattern: /((?:^|[^<])<<-?\s*)(\w+?)\s*(?:\r?\n|\r)[\s\S]*?(?:\r?\n|\r)\2/,
 				lookbehind: true,
 				greedy: true,
 				inside: insideString
@@ -115,7 +115,7 @@
 			// Here-document with quotes around the tag
 			// → No expansion (so no “inside”).
 			{
-				pattern: /((?:^|[^<])<<-?\s*)(["'])(\w+)\2\s*(?:\r?\n|\r)(?:[\s\S])*?(?:\r?\n|\r)\3/,
+				pattern: /((?:^|[^<])<<-?\s*)(["'])(\w+)\2\s*(?:\r?\n|\r)[\s\S]*?(?:\r?\n|\r)\3/,
 				lookbehind: true,
 				greedy: true
 			},
diff --git a/components/prism-bash.min.js b/components/prism-bash.min.js
index 5cde45f..d1b2a5d 100644
--- a/components/prism-bash.min.js
+++ b/components/prism-bash.min.js
@@ -1 +1 @@
-!function(e){var t="\\b(?:BASH|BASHOPTS|BASH_ALIASES|BASH_ARGC|BASH_ARGV|BASH_CMDS|BASH_COMPLETION_COMPAT_DIR|BASH_LINENO|BASH_REMATCH|BASH_SOURCE|BASH_VERSINFO|BASH_VERSION|COLORTERM|COLUMNS|COMP_WORDBREAKS|DBUS_SESSION_BUS_ADDRESS|DEFAULTS_PATH|DESKTOP_SESSION|DIRSTACK|DISPLAY|EUID|GDMSESSION|GDM_LANG|GNOME_KEYRING_CONTROL|GNOME_KEYRING_PID|GPG_AGENT_INFO|GROUPS|HISTCONTROL|HISTFILE|HISTFILESIZE|HISTSIZE|HOME|HOSTNAME|HOSTTYPE|IFS|INSTANCE|JOB|LANG|LANGUAGE|LC_ADDRESS|LC_ALL|LC_IDENTIFICATION|LC_MEASUREMENT|LC_MONETARY|LC_NAME|LC_NUMERIC|LC_PAPER|LC_TELEPHONE|LC_TIME|LESSCLOSE|LESSOPEN|LINES|LOGNAME|LS_COLORS|MACHTYPE|MAILCHECK|MANDATORY_PATH|NO_AT_BRIDGE|OLDPWD|OPTERR|OPTIND|ORBIT_SOCKETDIR|OSTYPE|PAPERSIZE|PATH|PIPESTATUS|PPID|PS1|PS2|PS3|PS4|PWD|RANDOM|REPLY|SECONDS|SELINUX_INIT|SESSION|SESSIONTYPE|SESSION_MANAGER|SHELL|SHELLOPTS|SHLVL|SSH_AUTH_SOCK|TERM|UID|UPSTART_EVENTS|UPSTART_INSTANCE|UPSTART_JOB|UPSTART_SESSION|USER|WINDOWID|XAUTHORITY|XDG_CONFIG_DIRS|XDG_CURRENT_DESKTOP|XDG_DATA_DIRS|XDG_GREETER_DATA_DIR|XDG_MENU_PREFIX|XDG_RUNTIME_DIR|XDG_SEAT|XDG_SEAT_PATH|XDG_SESSION_DESKTOP|XDG_SESSION_ID|XDG_SESSION_PATH|XDG_SESSION_TYPE|XDG_VTNR|XMODIFIERS)\\b",n={environment:{pattern:RegExp("\\$"+t),alias:"constant"},variable:[{pattern:/\$?\(\([\s\S]+?\)\)/,greedy:!0,inside:{variable:[{pattern:/(^\$\(\([\s\S]+)\)\)/,lookbehind:!0},/^\$\(\(/],number:/\b0x[\dA-Fa-f]+\b|(?:\b\d+\.?\d*|\B\.\d+)(?:[Ee]-?\d+)?/,operator:/--?|-=|\+\+?|\+=|!=?|~|\*\*?|\*=|\/=?|%=?|<<=?|>>=?|<=?|>=?|==?|&&?|&=|\^=?|\|\|?|\|=|\?|:/,punctuation:/\(\(?|\)\)?|,|;/}},{pattern:/\$\((?:\([^)]+\)|[^()])+\)|`[^`]+`/,greedy:!0,inside:{variable:/^\$\(|^`|\)$|`$/}},{pattern:/\$\{[^}]+\}/,greedy:!0,inside:{operator:/:[-=?+]?|[!\/]|##?|%%?|\^\^?|,,?/,punctuation:/[\[\]]/,environment:{pattern:RegExp("(\\{)"+t),lookbehind:!0,alias:"constant"}}},/\$(?:\w+|[#?*!@$])/],entity:/\\(?:[abceEfnrtv\\"]|O?[0-7]{1,3}|x[0-9a-fA-F]{1,2}|u[0-9a-fA-F]{4}|U[0-9a-fA-F]{8})/};e.languages.bash={shebang:{pattern:/^#!\s*\/.*/,alias:"important"},comment:{pattern:/(^|[^"{\\$])#.*/,lookbehind:!0},"function-name":[{pattern:/(\bfunction\s+)\w+(?=(?:\s*\(?:\s*\))?\s*\{)/,lookbehind:!0,alias:"function"},{pattern:/\b\w+(?=\s*\(\s*\)\s*\{)/,alias:"function"}],"for-or-select":{pattern:/(\b(?:for|select)\s+)\w+(?=\s+in\s)/,alias:"variable",lookbehind:!0},"assign-left":{pattern:/(^|[\s;|&]|[<>]\()\w+(?=\+?=)/,inside:{environment:{pattern:RegExp("(^|[\\s;|&]|[<>]\\()"+t),lookbehind:!0,alias:"constant"}},alias:"variable",lookbehind:!0},string:[{pattern:/((?:^|[^<])<<-?\s*)(\w+?)\s*(?:\r?\n|\r)(?:[\s\S])*?(?:\r?\n|\r)\2/,lookbehind:!0,greedy:!0,inside:n},{pattern:/((?:^|[^<])<<-?\s*)(["'])(\w+)\2\s*(?:\r?\n|\r)(?:[\s\S])*?(?:\r?\n|\r)\3/,lookbehind:!0,greedy:!0},{pattern:/(["'])(?:\\[\s\S]|\$\([^)]+\)|`[^`]+`|(?!\1)[^\\])*\1/,greedy:!0,inside:n}],environment:{pattern:RegExp("\\$?"+t),alias:"constant"},variable:n.variable,function:{pattern:/(^|[\s;|&]|[<>]\()(?:add|apropos|apt|aptitude|apt-cache|apt-get|aspell|automysqlbackup|awk|basename|bash|bc|bconsole|bg|bzip2|cal|cat|cfdisk|chgrp|chkconfig|chmod|chown|chroot|cksum|clear|cmp|column|comm|cp|cron|crontab|csplit|curl|cut|date|dc|dd|ddrescue|debootstrap|df|diff|diff3|dig|dir|dircolors|dirname|dirs|dmesg|du|egrep|eject|env|ethtool|expand|expect|expr|fdformat|fdisk|fg|fgrep|file|find|fmt|fold|format|free|fsck|ftp|fuser|gawk|git|gparted|grep|groupadd|groupdel|groupmod|groups|grub-mkconfig|gzip|halt|head|hg|history|host|hostname|htop|iconv|id|ifconfig|ifdown|ifup|import|install|ip|jobs|join|kill|killall|less|link|ln|locate|logname|logrotate|look|lpc|lpr|lprint|lprintd|lprintq|lprm|ls|lsof|lynx|make|man|mc|mdadm|mkconfig|mkdir|mke2fs|mkfifo|mkfs|mkisofs|mknod|mkswap|mmv|more|most|mount|mtools|mtr|mutt|mv|nano|nc|netstat|nice|nl|nohup|notify-send|npm|nslookup|op|open|parted|passwd|paste|pathchk|ping|pkill|pnpm|popd|pr|printcap|printenv|ps|pushd|pv|quota|quotacheck|quotactl|ram|rar|rcp|reboot|remsync|rename|renice|rev|rm|rmdir|rpm|rsync|scp|screen|sdiff|sed|sendmail|seq|service|sftp|sh|shellcheck|shuf|shutdown|sleep|slocate|sort|split|ssh|stat|strace|su|sudo|sum|suspend|swapon|sync|tac|tail|tar|tee|time|timeout|top|touch|tr|traceroute|tsort|tty|umount|uname|unexpand|uniq|units|unrar|unshar|unzip|update-grub|uptime|useradd|userdel|usermod|users|uudecode|uuencode|v|vdir|vi|vim|virsh|vmstat|wait|watch|wc|wget|whereis|which|who|whoami|write|xargs|xdg-open|yarn|yes|zenity|zip|zsh|zypper)(?=$|[)\s;|&])/,lookbehind:!0},keyword:{pattern:/(^|[\s;|&]|[<>]\()(?:if|then|else|elif|fi|for|while|in|case|esac|function|select|do|done|until)(?=$|[)\s;|&])/,lookbehind:!0},builtin:{pattern:/(^|[\s;|&]|[<>]\()(?:\.|:|break|cd|continue|eval|exec|exit|export|getopts|hash|pwd|readonly|return|shift|test|times|trap|umask|unset|alias|bind|builtin|caller|command|declare|echo|enable|help|let|local|logout|mapfile|printf|read|readarray|source|type|typeset|ulimit|unalias|set|shopt)(?=$|[)\s;|&])/,lookbehind:!0,alias:"class-name"},boolean:{pattern:/(^|[\s;|&]|[<>]\()(?:true|false)(?=$|[)\s;|&])/,lookbehind:!0},"file-descriptor":{pattern:/\B&\d\b/,alias:"important"},operator:{pattern:/\d?<>|>\||\+=|==?|!=?|=~|<<[<-]?|[&\d]?>>|\d?[<>]&?|&[>&]?|\|[&|]?|<=?|>=?/,inside:{"file-descriptor":{pattern:/^\d/,alias:"important"}}},punctuation:/\$?\(\(?|\)\)?|\.\.|[{}[\];\\]/,number:{pattern:/(^|\s)(?:[1-9]\d*|0)(?:[.,]\d+)?\b/,lookbehind:!0}};for(var a=["comment","function-name","for-or-select","assign-left","string","environment","function","keyword","builtin","boolean","file-descriptor","operator","punctuation","number"],r=n.variable[1].inside,s=0;s<a.length;s++)r[a[s]]=e.languages.bash[a[s]];e.languages.shell=e.languages.bash}(Prism);
\ No newline at end of file
+!function(e){var t="\\b(?:BASH|BASHOPTS|BASH_ALIASES|BASH_ARGC|BASH_ARGV|BASH_CMDS|BASH_COMPLETION_COMPAT_DIR|BASH_LINENO|BASH_REMATCH|BASH_SOURCE|BASH_VERSINFO|BASH_VERSION|COLORTERM|COLUMNS|COMP_WORDBREAKS|DBUS_SESSION_BUS_ADDRESS|DEFAULTS_PATH|DESKTOP_SESSION|DIRSTACK|DISPLAY|EUID|GDMSESSION|GDM_LANG|GNOME_KEYRING_CONTROL|GNOME_KEYRING_PID|GPG_AGENT_INFO|GROUPS|HISTCONTROL|HISTFILE|HISTFILESIZE|HISTSIZE|HOME|HOSTNAME|HOSTTYPE|IFS|INSTANCE|JOB|LANG|LANGUAGE|LC_ADDRESS|LC_ALL|LC_IDENTIFICATION|LC_MEASUREMENT|LC_MONETARY|LC_NAME|LC_NUMERIC|LC_PAPER|LC_TELEPHONE|LC_TIME|LESSCLOSE|LESSOPEN|LINES|LOGNAME|LS_COLORS|MACHTYPE|MAILCHECK|MANDATORY_PATH|NO_AT_BRIDGE|OLDPWD|OPTERR|OPTIND|ORBIT_SOCKETDIR|OSTYPE|PAPERSIZE|PATH|PIPESTATUS|PPID|PS1|PS2|PS3|PS4|PWD|RANDOM|REPLY|SECONDS|SELINUX_INIT|SESSION|SESSIONTYPE|SESSION_MANAGER|SHELL|SHELLOPTS|SHLVL|SSH_AUTH_SOCK|TERM|UID|UPSTART_EVENTS|UPSTART_INSTANCE|UPSTART_JOB|UPSTART_SESSION|USER|WINDOWID|XAUTHORITY|XDG_CONFIG_DIRS|XDG_CURRENT_DESKTOP|XDG_DATA_DIRS|XDG_GREETER_DATA_DIR|XDG_MENU_PREFIX|XDG_RUNTIME_DIR|XDG_SEAT|XDG_SEAT_PATH|XDG_SESSION_DESKTOP|XDG_SESSION_ID|XDG_SESSION_PATH|XDG_SESSION_TYPE|XDG_VTNR|XMODIFIERS)\\b",n={environment:{pattern:RegExp("\\$"+t),alias:"constant"},variable:[{pattern:/\$?\(\([\s\S]+?\)\)/,greedy:!0,inside:{variable:[{pattern:/(^\$\(\([\s\S]+)\)\)/,lookbehind:!0},/^\$\(\(/],number:/\b0x[\dA-Fa-f]+\b|(?:\b\d+\.?\d*|\B\.\d+)(?:[Ee]-?\d+)?/,operator:/--?|-=|\+\+?|\+=|!=?|~|\*\*?|\*=|\/=?|%=?|<<=?|>>=?|<=?|>=?|==?|&&?|&=|\^=?|\|\|?|\|=|\?|:/,punctuation:/\(\(?|\)\)?|,|;/}},{pattern:/\$\((?:\([^)]+\)|[^()])+\)|`[^`]+`/,greedy:!0,inside:{variable:/^\$\(|^`|\)$|`$/}},{pattern:/\$\{[^}]+\}/,greedy:!0,inside:{operator:/:[-=?+]?|[!\/]|##?|%%?|\^\^?|,,?/,punctuation:/[\[\]]/,environment:{pattern:RegExp("(\\{)"+t),lookbehind:!0,alias:"constant"}}},/\$(?:\w+|[#?*!@$])/],entity:/\\(?:[abceEfnrtv\\"]|O?[0-7]{1,3}|x[0-9a-fA-F]{1,2}|u[0-9a-fA-F]{4}|U[0-9a-fA-F]{8})/};e.languages.bash={shebang:{pattern:/^#!\s*\/.*/,alias:"important"},comment:{pattern:/(^|[^"{\\$])#.*/,lookbehind:!0},"function-name":[{pattern:/(\bfunction\s+)\w+(?=(?:\s*\(?:\s*\))?\s*\{)/,lookbehind:!0,alias:"function"},{pattern:/\b\w+(?=\s*\(\s*\)\s*\{)/,alias:"function"}],"for-or-select":{pattern:/(\b(?:for|select)\s+)\w+(?=\s+in\s)/,alias:"variable",lookbehind:!0},"assign-left":{pattern:/(^|[\s;|&]|[<>]\()\w+(?=\+?=)/,inside:{environment:{pattern:RegExp("(^|[\\s;|&]|[<>]\\()"+t),lookbehind:!0,alias:"constant"}},alias:"variable",lookbehind:!0},string:[{pattern:/((?:^|[^<])<<-?\s*)(\w+?)\s*(?:\r?\n|\r)[\s\S]*?(?:\r?\n|\r)\2/,lookbehind:!0,greedy:!0,inside:n},{pattern:/((?:^|[^<])<<-?\s*)(["'])(\w+)\2\s*(?:\r?\n|\r)[\s\S]*?(?:\r?\n|\r)\3/,lookbehind:!0,greedy:!0},{pattern:/(["'])(?:\\[\s\S]|\$\([^)]+\)|`[^`]+`|(?!\1)[^\\])*\1/,greedy:!0,inside:n}],environment:{pattern:RegExp("\\$?"+t),alias:"constant"},variable:n.variable,function:{pattern:/(^|[\s;|&]|[<>]\()(?:add|apropos|apt|aptitude|apt-cache|apt-get|aspell|automysqlbackup|awk|basename|bash|bc|bconsole|bg|bzip2|cal|cat|cfdisk|chgrp|chkconfig|chmod|chown|chroot|cksum|clear|cmp|column|comm|cp|cron|crontab|csplit|curl|cut|date|dc|dd|ddrescue|debootstrap|df|diff|diff3|dig|dir|dircolors|dirname|dirs|dmesg|du|egrep|eject|env|ethtool|expand|expect|expr|fdformat|fdisk|fg|fgrep|file|find|fmt|fold|format|free|fsck|ftp|fuser|gawk|git|gparted|grep|groupadd|groupdel|groupmod|groups|grub-mkconfig|gzip|halt|head|hg|history|host|hostname|htop|iconv|id|ifconfig|ifdown|ifup|import|install|ip|jobs|join|kill|killall|less|link|ln|locate|logname|logrotate|look|lpc|lpr|lprint|lprintd|lprintq|lprm|ls|lsof|lynx|make|man|mc|mdadm|mkconfig|mkdir|mke2fs|mkfifo|mkfs|mkisofs|mknod|mkswap|mmv|more|most|mount|mtools|mtr|mutt|mv|nano|nc|netstat|nice|nl|nohup|notify-send|npm|nslookup|op|open|parted|passwd|paste|pathchk|ping|pkill|pnpm|popd|pr|printcap|printenv|ps|pushd|pv|quota|quotacheck|quotactl|ram|rar|rcp|reboot|remsync|rename|renice|rev|rm|rmdir|rpm|rsync|scp|screen|sdiff|sed|sendmail|seq|service|sftp|sh|shellcheck|shuf|shutdown|sleep|slocate|sort|split|ssh|stat|strace|su|sudo|sum|suspend|swapon|sync|tac|tail|tar|tee|time|timeout|top|touch|tr|traceroute|tsort|tty|umount|uname|unexpand|uniq|units|unrar|unshar|unzip|update-grub|uptime|useradd|userdel|usermod|users|uudecode|uuencode|v|vdir|vi|vim|virsh|vmstat|wait|watch|wc|wget|whereis|which|who|whoami|write|xargs|xdg-open|yarn|yes|zenity|zip|zsh|zypper)(?=$|[)\s;|&])/,lookbehind:!0},keyword:{pattern:/(^|[\s;|&]|[<>]\()(?:if|then|else|elif|fi|for|while|in|case|esac|function|select|do|done|until)(?=$|[)\s;|&])/,lookbehind:!0},builtin:{pattern:/(^|[\s;|&]|[<>]\()(?:\.|:|break|cd|continue|eval|exec|exit|export|getopts|hash|pwd|readonly|return|shift|test|times|trap|umask|unset|alias|bind|builtin|caller|command|declare|echo|enable|help|let|local|logout|mapfile|printf|read|readarray|source|type|typeset|ulimit|unalias|set|shopt)(?=$|[)\s;|&])/,lookbehind:!0,alias:"class-name"},boolean:{pattern:/(^|[\s;|&]|[<>]\()(?:true|false)(?=$|[)\s;|&])/,lookbehind:!0},"file-descriptor":{pattern:/\B&\d\b/,alias:"important"},operator:{pattern:/\d?<>|>\||\+=|==?|!=?|=~|<<[<-]?|[&\d]?>>|\d?[<>]&?|&[>&]?|\|[&|]?|<=?|>=?/,inside:{"file-descriptor":{pattern:/^\d/,alias:"important"}}},punctuation:/\$?\(\(?|\)\)?|\.\.|[{}[\];\\]/,number:{pattern:/(^|\s)(?:[1-9]\d*|0)(?:[.,]\d+)?\b/,lookbehind:!0}};for(var a=["comment","function-name","for-or-select","assign-left","string","environment","function","keyword","builtin","boolean","file-descriptor","operator","punctuation","number"],r=n.variable[1].inside,s=0;s<a.length;s++)r[a[s]]=e.languages.bash[a[s]];e.languages.shell=e.languages.bash}(Prism);
\ No newline at end of file
diff --git a/components/prism-shell-session.js b/components/prism-shell-session.js
index 48d484b..893fdb2 100644
--- a/components/prism-shell-session.js
+++ b/components/prism-shell-session.js
@@ -1,21 +1,42 @@
-Prism.languages['shell-session'] = {
-	'command': {
-		pattern: /\$(?:[^\r\n'"<]|(["'])(?:\\[\s\S]|\$\([^)]+\)|`[^`]+`|(?!\1)[^\\])*\1|(?:^|[^<])<<\s*["']?(?:\w+?)["']?\s*(?:\r\n?|\n)(?:[\s\S])*?(?:\r\n?|\n)\3)+/,
-		inside: {
-			'bash': {
-				pattern: /(\$\s*)[\s\S]+/,
-				lookbehind: true,
-				alias: 'language-bash',
-				inside: Prism.languages.bash
-			},
-			'sh': {
-				pattern: /^\$/,
-				alias: 'important'
+(function (Prism) {
+
+	// CAREFUL!
+	// The following patterns are concatenated, so the group referenced by a back reference is non-obvious!
+
+	var strings = [
+		// normal string
+		// 1 capturing group
+		/(["'])(?:\\[\s\S]|\$\([^)]+\)|`[^`]+`|(?!\1)[^\\])*\1/.source,
+
+		// here doc
+		// 1 capturing group
+		/<<-?\s*(\w+?)\s*(?:\r?\n|\r)[\s\S]*?(?:\r?\n|\r)\2/.source,
+
+		// here doc quoted
+		// 2 capturing group
+		/<<-?\s*(["'])(\w+)\3\s*(?:\r?\n|\r)[\s\S]*?(?:\r?\n|\r)\4/.source
+	].join('|');
+
+	Prism.languages['shell-session'] = {
+		'command': {
+			pattern: RegExp(/\$(?:[^\r\n'"<]|<<str>>)+/.source.replace(/<<str>>/g, strings)),
+			inside: {
+				'bash': {
+					pattern: /(\$\s*)[\s\S]+/,
+					lookbehind: true,
+					alias: 'language-bash',
+					inside: Prism.languages.bash
+				},
+				'sh': {
+					pattern: /^\$/,
+					alias: 'important'
+				}
 			}
+		},
+		'output': {
+			pattern: /.(?:.*(?:\r\n?|\n|.$))*/
+			// output highlighting?
 		}
-	},
-	'output': {
-		pattern: /.(?:.*(?:\r\n?|\n|.$))*/
-		// output highlighting?
-	}
-}
+	};
+
+}(Prism));
diff --git a/components/prism-shell-session.min.js b/components/prism-shell-session.min.js
index e67b6ce..f7b9129 100644
--- a/components/prism-shell-session.min.js
+++ b/components/prism-shell-session.min.js
@@ -1 +1 @@
-Prism.languages["shell-session"]={command:{pattern:/\$(?:[^\r\n'"<]|(["'])(?:\\[\s\S]|\$\([^)]+\)|`[^`]+`|(?!\1)[^\\])*\1|(?:^|[^<])<<\s*["']?(?:\w+?)["']?\s*(?:\r\n?|\n)(?:[\s\S])*?(?:\r\n?|\n)\3)+/,inside:{bash:{pattern:/(\$\s*)[\s\S]+/,lookbehind:!0,alias:"language-bash",inside:Prism.languages.bash},sh:{pattern:/^\$/,alias:"important"}}},output:{pattern:/.(?:.*(?:\r\n?|\n|.$))*/}};
\ No newline at end of file
+!function(s){var n=["([\"'])(?:\\\\[\\s\\S]|\\$\\([^)]+\\)|`[^`]+`|(?!\\1)[^\\\\])*\\1","<<-?\\s*(\\w+?)\\s*(?:\r?\n|\r)[\\s\\S]*?(?:\r?\n|\r)\\2","<<-?\\s*([\"'])(\\w+)\\3\\s*(?:\r?\n|\r)[\\s\\S]*?(?:\r?\n|\r)\\4"].join("|");s.languages["shell-session"]={command:{pattern:RegExp("\\$(?:[^\r\\n'\"<]|<<str>>)+".replace(/<<str>>/g,n)),inside:{bash:{pattern:/(\$\s*)[\s\S]+/,lookbehind:!0,alias:"language-bash",inside:s.languages.bash},sh:{pattern:/^\$/,alias:"important"}}},output:{pattern:/.(?:.*(?:\r\n?|\n|.$))*/}}}(Prism);
\ No newline at end of file
diff --git a/tests/languages/shell-session/command_string_feature.test b/tests/languages/shell-session/command_string_feature.test
index 2a80ec0..d84afec 100644
--- a/tests/languages/shell-session/command_string_feature.test
+++ b/tests/languages/shell-session/command_string_feature.test
@@ -3,6 +3,16 @@ $ echo 'Foo
 $ echo "Foo
 > Bar"
 
+$ echo <<- STRING_END
+foo
+bar
+STRING_END
+
+$ echo <<- "STRING_END"
+foo
+bar
+STRING_END
+
 ----------------------------------------------------
 
 [
@@ -24,6 +34,30 @@ $ echo "Foo
 				"\"Foo\n> Bar\""
 			]]
 		]]
+	]],
+
+	["command", [
+		["sh", "$"],
+		["bash", [
+			["builtin", "echo"],
+			["operator", [
+				"<<-"
+			]],
+			["string", [
+				"STRING_END\nfoo\nbar\nSTRING_END"
+			]]
+		]]
+	]],
+
+	["command", [
+		["sh", "$"],
+		["bash", [
+			["builtin", "echo"],
+			["operator", [
+				"<<-"
+			]],
+			["string", "\"STRING_END\"\nfoo\nbar\nSTRING_END"]
+		]]
 	]]
 ]
 
diff --git a/tests/pattern-tests.js b/tests/pattern-tests.js
index f209d5d..dad15ac 100644
--- a/tests/pattern-tests.js
+++ b/tests/pattern-tests.js
@@ -264,4 +264,16 @@ function testPatterns(Prism) {
 		});
 	});
 
+	it('- should not use octal escapes', function () {
+		forEachPattern(({ ast, tokenPath, reportError }) => {
+			visitRegExpAST(ast.pattern, {
+				onCharacterEnter(node) {
+					if (/^\\(?:[1-9]|\d{2,})$/.test(node.raw)) {
+						reportError(`Token ${tokenPath}: Octal escape ${node.raw}.`);
+					}
+				}
+			});
+		});
+	});
+
 }