Description

Add syntax highlighting in the Classic Post & Page HTML text editor, Gutenberg Code Editor, and Theme & Plugin editors using CodeMirror.js

Fonctionnalités

Coloration syntaxique dans l’éditeur HTML de page et de publication
NEW: Syntax highlighting in the Gutenberg Code Editor (not Visual Editor)
Syntax highlighting in the Theme & Plugin editors
Syntax highlighting for WordPress [shortcodes/]
Save your posts and pages pressing Ctrl+S (Cmd+S on Mac)
Restaurer la position du curseur après le rechargement de la page
Huge selection of themes and other customization options
Fullscreen mode: toggle with F11/Esc hotkeys

If you would like to contribute to this plugin, view the github repo.

If you’re a regular user of this plugin, please consider taking a short User Experience Survey to provide feedback that will help shape the new version 3.0.

Captures d’écran

Coloration syntaxique dans l’éditeur HTML classique de page et de publication.
Quick Settings Panel.
Advanced Settings Panel.
Syntax highlighting in the Theme/Plugin editor.
Example code highlighting.

FAQ

Does it work with Gutenberg?

Yes! Partially… Since version 2.3.0, it works with the Gutenberg Code Editor, but only the Code Editor, not the Visual Editor. Press Ctrl+Shift+Alt+M / Cmd+Shift+Alt+M to switch between the Visual Editor and the Code Editor.

It does not work with blocks in the Gutenberg Visual Editor. This means it does not highlight code in:
* The Edit as HTML section of every block
* The Custom HTML block
* The Shortcode block
See the last screenshot for a visual example.

It may work with other code related parts of Gutenberg in the future. Track the progress here.

How do I get the Classic Editor back!?

Since WordPress version 5.0, Gutenberg is the default editor. If you want this plugin to work the way it used to, you’ll have to download the Classic Editor plugin.

Can I search and replace?

Function: WINDOWS / MAC
Start searching: Ctrl-F / Cmd-F
Find next: Ctrl-G / Cmd-G
Find previous: Shift-Ctrl-G / Shift-Cmd-G
Replace: Shift-Ctrl-F / Cmd-Opt-F
Replace all: Shift-Ctrl-R / Shift-Cmd-Opt-F
Persistent search: Alt-F (dialog doesn’t auto-close, Enter to find next, Shift-Enter to find previous)
Jump to line: Alt-G

Why are p and br tags are being removed?

WordPress has a feature called the ‘auto p’ filter which:

« Changes double line-breaks in the text into HTML paragraphs. »

For example, auto p will take some standard post content like this:

Some long text
that has many lines.

And paragraphs in it.

and turn it into something like this:

<p>Some long text<br/>
that has many lines</p>
<p>And paragraphs in it.</p>

Like your little brother, it thinks it’s helping, even if it isn’t.

What can I do about it?
* Disable auto p: There are several plugins you can use to disable auto p in the Classic Editor. I’d recommend Toggle wpautop.
* Show the p tags: The plugin TinyMCE Advanced has an Advanced Option to ‘Keep paragraph tags’. This option will still add the « auto p » tags but won’t strip them out of the visible code.

You can read more about this issues this may cause in this support thread.

Why is my code is being reformatting when I switch to the Visual Editor and back?

The WordPress Visual Editor needs to reformat code in order to function correctly. This is not something that this plugin can fix. You can disable the Visual Editor entirely by going to: Users > Your Profile > Visual Editor: check ‘Disable the visual editor when writing’.

Scrollbars are not appearing! / Scroll position is not reset! / Code window is not resizable!

You may have the ‘Enable full-height editor and distraction-free functionality’ turned on. This is a native WordPress feature that changes the scrolling and fullscreen behavior of both the Code Editor and Visual Editor.

To Disable Full-height Editor: Go to ‘Screen Options’ (in the top right of the editor page), then uncheck ‘Enable full-height editor and distraction-free functionality’ in the Additional Settings section.

How do I use Fullscreen?

The fullscreen button on the top right of the editor will do one of two things depending on the ‘Enable full-height editor and distraction-free functionality’ setting in your ‘Screen Options’ (in the top right of the editor page):
* Full-height Editor Enabled: Toggles the ‘distraction free mode’.
* Full-height Editor Disabled: Toggles the ‘fullscreen mode’.

Keybindings: F11 will toggle fullscreen on and off, and esc will close fullscreen.

Does it work with Internet Explorer?

Not really… It is partially supported in IE 11. Known bugs are tracked here, but won’t be fixed. Anything less that IE 10 isn’t even supported by Microsoft anymore. If you are using Internet Explorer you should get a better browser.

Avis

Marco Panichi 24 février 2024

In the era of Gutenberg and visual builders, as a good old programmer of the past, I need to edit HTML code in the showcase pages of the WordPress sites I create. This plugin is therefore a must-have for me. It works very well, it doesn’t have many options but all those necessary to configure the editing environment comfortable for me.

Alexander Guskov 21 octobre 2021

The fantastical plugin that converts faceless TinyMCE to the powerful tool. The only suggestion is to mark dark/light themes, please

Foliovision: Making the web work for you 20 août 2021

HESH is built on top of Code Mirror which is first class code. The implementation is somewhat eclectic including a settings button in the front end which allows the user to really play with editor settings. Easy access to the settings is convenient at first and then a bit of a distraction. HESH even highlights WordPress shortcodes [shortcode] syntax. What HESH doesn’t have is Markdown syntax highlighting in the posts/pages plain text editor but the WordPress shortcodes and HTML highlighting helps make up for it. What is buggy are the settings on iPhone (iOS 13.5) where the settings buttons more or less don’t work and the settings can’t be closed. If you don’t touch the settings though, HESH provides a better plain text editor than WordPress default (which can be very finicky to accept text entry). It remains easier to edit on iOS with HESH installed than without so no downnmarks here. All in all a great plugin, a bit overwhelmed right now with legacy support for WordPress 4.9 editor, Classic Editor, Code view, plain text editor, Gutenberg and the sixteen different kinds of blocks which might need syntax highlighting. I can’t blame the plugin authors for not being on top of all editors all the time now in the current Gutenberg-induced editor hell. Very, very grateful for their hard work and looking forward to HESH v3.

ximbor 10 août 2021

Thank you for taking the time to create such an awesome plugin 🙂 lots of options of colours etc. Very good.

muhiBBi 10 juin 2021

It’s nice that this plugin is customizable. However, it causes delays while writing in the editor. These pauses are very frustrating.

cutu234 25 mars 2021

This plugins works great with the classic editor. I can’t comment on using it with Gutenberg or any pagebuilders, since I don’t use them. If you edit HTML with the WP editor on a regular basis, you can’t really live without this plugin. I’m really looking forward version 3. Keeep up the good work and thanks for sharing with us!

Lire les 110 avis

Contributeurs/contributrices & développeurs/développeuses

« HTML Editor Syntax Highlighter » est un logiciel libre. Les personnes suivantes ont contribué à cette extension.

“HTML Editor Syntax Highlighter” a été traduit dans 4 locales. Remerciez l’équipe de traduction pour ses contributions.

Traduisez « HTML Editor Syntax Highlighter » dans votre langue.

Le développement vous intéresse ?

Parcourir le code, consulter le SVN dépôt, ou s’inscrire au journal de développement par RSS.

Journal

2.4.4

Added about 15 new themes

2.4.3

Updated css for wordpress v5.8

2.4.2

removing survey notice

2.4.1

fixed bug: notification would not dismiss if the visual editor was open
fix bug: Setting Form can now submit from memory, not just when the dom is in the page.

2.4.0

updating a major number so I can review downloads more accurately.
reorganized the codebase
Reverting the name-change of hesh.php
This name-change of html-editor-syntax-highlighter.php to hesh.php caused the plugin to deactivate itself because the php file was missing. Reverting the name-change of hesh.php will cause this all over again, but hey.

2.3.5

remove Github Updater headers
testing WP update Process

2.3.4

fixing typo $this->$surveyLink to $this->surveyLink

2.3.3

Updated Release process
Fix bug: #80 Only activate on pages where the editor will run
Added UX survey notice.

2.3.2

added a seventh screenshot
removed smartIndent because its annoying
fixed gulp watch task
updated FAQ

2.3.1

Fixing JS error in issue #81 (Hopefully?)
Updating authorship so James can get a job. Will revert to Petr Later…

2.3.0

Support for Gutenberg Code Editor!
Added new themes: Codepen and WordPress (which is now the default).
Created new screenshots for the plugin page.
New Logo based on <W/>.
Updated FAQ with Gutenberg info.
Changed build steps to only export one .css and .js file

2.2.6

added Gutenberg information after the update to WordPress version 5.0

2.2.5

fixed bug: #75 removing f typo

2.2.4

fixed bug: Allow Multiple Instances of CodeMirror on a page #71
fixed bug: js error when custom post type does not support ‘editor’ feature #62

2.2.3

A patch for WP 4.9. No more double editors in theme/plugin editors.

2.2.2

fixed bug: github updater in production issue #52
updated Codemirror to latest release version

2.2.1

fixed bug: editor was not stopping when switching between visual editor and text editor

2.2.0

added search & replace with dialog
added highlighting options
added auto-close tags and brackets option
added code-folding option
added scrollbars option
added keyMap options
added Default and None themes
fixed bug: made tab management agnostic to tab count and names – #50

2.1.0

added search
add highlighting for 
fixed bug: Theme and Plugin Editor not working

2.0.1

fixed bug: esc key weirdness
fixed bug: don’t steal editor focus from title on ‘Add New Post’
fixed bug: scrollbar appears in middle of text editor
fixed bug: toolbar can be too big

2.0.0

now adjusts to the ‘Enable full-height editor and distraction-free functionality’ setting
syntax highlighting on Theme and Plugin Editor pages
fixed bug: native wp editor buttons work on content – no longer overwrites with emulating buttons
Settings:
- added an extendable settings panel
- saves settings to WordPress user profile
- added more text customization settings
basically rewrote the whole codebase

1.7.2

fixed bug: pre v5.4 php was causing an error – func_that_returns_array()['index'] syntax is not allowed
fixed bug: CodeMirror not initializing properly when new user tries to edit post for the first time
fixed bug: CodeMirror no longer trying to load on « All Posts » and « All Pages »
fixed bug: Font and theme were reset to default when switching to the visual editor and back

1.7.1

fixed bug: return key would create two new lines and ignore indent
fixed bug: wp native « Add Media » button was not working
added version string to .css and .js resources for cache-busting purposes

1.7.0

Ctrl-S / Cmd-S saving will now select « Save Draft » if the post has not been published yet
Switched to an npm and grunt.js based build so new versions of CodeMirror can be applied easier
Updated CodeMirror to its latest version
Fixed FireFox bug: <select> drop-down would not display due to ::active state transform property
Fixed bug: toolbar covering text at small screen width
Fixed bug: switchEditors is undefined
Updated Css for wp 4.5
Added all available CodeMirror themes
Added syntax highlighting:
- for WordPress shortcodes
- for  tags and their variants
- NEW CodeMirror modes: shortcode.js & wordpresspost.js
Now calling hesh.js in an anonymous wrapper so it won’t pollute the global namespace
Now initializing hesh.js in an async compliant way
Refactored php to enqueue javascript in the WordPress friendly way
Tested with WordPress 4.5.2
Tested in all modern desktop browsers on OSX and Windows 10

1.6.9

Correctif des problèmes liés au changement de mode d’édition dans WP 4.3

1.6.7

Ajout d’un bouton pour les balises de paragraphe, il est visible uniquement lorsque l’éditeur visuel est désactivé.
Ajout de la hauteur minimale de la fenêtre de l’éditeur pour le mode pleine hauteur

1.6.6

Ajout de la hauteur minimale de la fenêtre de l’éditeur pour le mode pleine hauteur

1.6.5

Correctif pour le mode pleine hauteur
Correctif du problème de la première ligne cachée sur les petits écrans

1.6.4

Correctif du problème de la première ligne cachée sur les petits écrans

1.6.3

Correctif de la hauteur de la fenêtre de l’éditeur et du gestionnaire de redimensionnement
Problème des « entêtes déjà envoyés »

1.6.2

Compatibilité avec WP 4.0
Correctif mode plein écran

1.6.0

Vous pouvez modifier la taille de la police dans l’éditeur
Correctif problème de restauration de la position du curseur
Mise à jour de la bibliothèque CodeMirror
Quelques améliorations mineurs

1.5.0

Mise à jour de la bibliothèque CodeMirror
Quelques améliorations mineurs

1.4.8

Le bouton ajouter un lien fonctionne désormais avec la fenêtre du sélecteur de page
Quelques améliorations mineurs

1.4.7

Vous pouvez désormais sélectionner un thème de couleur d’éditeur clair ou sombre.

1.4.6

Correctif problème lorsque le bouton « Ajouter un média » a arrêté de fonctionner
Fixed editor resize bug in Visual mode.

1.4.5

Bug fixing

1.4.4

Add Media button now works correctly in Text mode
Fixed jumping cursor issue when ‘:’, ‘{‘, ‘}’ keys are pressed

1.4.3

Fixed jumping cursor issue when ‘/’ key is pressed.

1.4.2

Fixed a focus bug

1.4.1

Permuter le mode plein écran avec les touches de raccourci F11/Esc
Publish Post/Page hotkeys Ctrl + S / Cmd + S
Fixed some bugs for IE 8
Added development files to the zip bundle

1.4.0

New fullscreen mode
Remembers tab state
Editor resize handler
Code refactoring and minification for better loading performance

1.3.2

Mise à jour de la bibliothèque CodeMirror
Increased loading performance
Match brackets

1.3.0

CodeMirror library updated to version 3.02
Added quick-tags toolbar buttons
Preserve the scroll position after update or page reload

1.2.1

vertical resize for the editing box (works on FireFox, Chrome, Safari).
not working buttons/tags was hidden

1.2

Bug fix:
* plugin does not work in new post/page.

1.1

Bug fix (thanks to collinprice):
* when user has the visual editor disabled this plugin does not show up.

1.0

Version initiale.