From 3c196ba389a43bb988154aae8d06ee01bcb7c7ed Mon Sep 17 00:00:00 2001
From: Stegmujo <johannesst@gmx.de>
Date: Tue, 25 Jul 2023 12:51:52 +0000
Subject: [PATCH] Render MathML for tripledash and ..arrows cmds from texfified
 mhchem

* already these are as mhchem macros in mappings, tbd adapt

Bug: T340024
Change-Id: Ic604720c71de720b6959159cfd78d6b55fdf399d
---
 src/TexVC/MMLmappings/BaseMappings.php |  2 +-
 src/TexVC/MMLmappings/BaseMethods.php  |  3 +++
 src/TexVC/MMLmappings/BaseParsing.php  | 13 ++++++++++++-
 src/TexVC/texutil.json                 |  4 ++++
 4 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/src/TexVC/MMLmappings/BaseMappings.php b/src/TexVC/MMLmappings/BaseMappings.php
index 2d680494f..27949f9e5 100644
--- a/src/TexVC/MMLmappings/BaseMappings.php
+++ b/src/TexVC/MMLmappings/BaseMappings.php
@@ -755,7 +755,7 @@ class BaseMappings {
 		],
 		"tripledash" => [
 			'macro',
-			'\\vphantom{-}\\raise2mu{\\kern2mu\\tiny\\text{-}\\kern1mu\\text{-}\\kern1mu\\text{-}\\kern2mu}'
+			'\\vphantom{-}\\raise{2mu}\\\kern{2mu}\\tiny\\text{-}\\kern{1mu}\\text{-}\\kern{1mu}\\text{-}\\kern{2mu}}'
 		],
 		"xleftrightarrow" => [ 'xArrow', 0x2194, 6, 6 ],
 		"xrightleftharpoons" => [ 'xArrow', 0x21CC, 5, 7 ],
diff --git a/src/TexVC/MMLmappings/BaseMethods.php b/src/TexVC/MMLmappings/BaseMethods.php
index d67acbef3..cd9ee5b4c 100644
--- a/src/TexVC/MMLmappings/BaseMethods.php
+++ b/src/TexVC/MMLmappings/BaseMethods.php
@@ -46,6 +46,9 @@ class BaseMethods {
 						$resFct = BaseMappings::getSpecialByKey( $input );
 						if ( $resFct == null ) {
 							$resFct = BaseMappings::getCancelByKey( $input );
+								if ( $resFct == null ) {
+									$resFct = BaseMappings::getMhChemByKey( $input );
+								}
 						}
 					}
 				}
diff --git a/src/TexVC/MMLmappings/BaseParsing.php b/src/TexVC/MMLmappings/BaseParsing.php
index 161442147..347584f21 100644
--- a/src/TexVC/MMLmappings/BaseParsing.php
+++ b/src/TexVC/MMLmappings/BaseParsing.php
@@ -42,6 +42,7 @@ use MediaWiki\Extension\Math\TexVC\Nodes\Fun2sq;
 use MediaWiki\Extension\Math\TexVC\Nodes\Literal;
 use MediaWiki\Extension\Math\TexVC\Nodes\TexArray;
 use MediaWiki\Extension\Math\TexVC\Nodes\TexNode;
+use MediaWiki\Extension\Math\TexVC\TexVC;
 
 /**
  * Parsing functions for specific recognized mappings.
@@ -358,7 +359,8 @@ class BaseParsing {
 			// Prevent parsing in unmapped cases
 			return null;
 		}
-		if ( $name == "mskip" || $name == "mkern" ) {
+		// Added kern j4t
+		if ( $name == "mskip" || $name == "mkern" || "kern" ) {
 			$args = [ "width" => $em ];
 		} else {
 			return null;
@@ -483,6 +485,15 @@ class BaseParsing {
 				$mo = new MMLmo();
 				return $mstyle->encapsulateRaw( $mspace->getEmpty() ) . $mo->encapsulateRaw( "&#x27FA;" ) .
 					$mstyle->encapsulateRaw( $mspace->getEmpty() );
+			case "tripledash":
+				print( "abc" );
+				$texvc = new TexVC();
+				$warnings = [];
+				$macro = "\\vphantom{-}\\raise{2mu}";
+				$checkRes = $texvc->check( $macro, [ "usemhchem" => true, "usemhchemtexified" => true ],
+					$warnings, true );
+				print( "res" );
+
 		}
 
 		// Removed all token based parsing, since macro resolution for the supported macros can be hardcoded in php
diff --git a/src/TexVC/texutil.json b/src/TexVC/texutil.json
index 776ba4327..dfbfd68c9 100644
--- a/src/TexVC/texutil.json
+++ b/src/TexVC/texutil.json
@@ -1215,6 +1215,10 @@
 	"\\ker": {
 		"latex_function_names": true
 	},
+	"\\kern": {
+		"fun_ar1": true,
+		"mhchemtexified_required": true
+	},
 	"\\koppa": {
 		"nullary_macro_in_mbox": true,
 		"teubner_required": true