0.9) that works like -O but can only pass one option per -P. Its value line_numbers. Controls how line numbers are arranged when line numbers are enabled on the source block. The theme used on this site was made by yours truly – download it here. If you don’t give an encoding and haven’t given an output file (that means To quote the page: DO NOT use Jekyll’s { % highlight % } … { % endhighlight % } syntax, especially together with the linenos option. Chroma — A general purpose syntax highlighter in pure Go . from pygments.formatter import Formatter: from pygments.util import get_bool_opt, get_int_opt, get_list_opt, \ get_choice_opt, xrange # Import this carefully: try: from PIL import Image, ImageDraw, ImageFont: pil_available = True: except ImportError: pil_available = False: … give an input file name and it has an extension that Pygments recognizes, you can Voila! Did you actually read the whole post up until this point? For example, the code block below contains three span tags: a red .kt, a purple .n, and a .p with the default color (using my highlighter theme): Since these spans have classes, we can easily style them using CSS. Default: pastie. This is copy-and-paste-friendly, but may cause alignment problems with some browsers or fonts. So if you stick with the linenos option, you have to use unwieldy workarounds to avoid the above problems. When we use the coderay or pygments source code highlighter we can also include line numbers. The topic? Pygments is licensed under the BSD license. Controls what method is used for applying CSS to the tokens. Select lexer. Usage is as follows: will print the help for the HTML formatter, while. The default value is False, which means no line numbers at all. I think the issue is that colorize_syntax defaults to nowrap => true, but none of the line numbering features in pygments work unless nowrap is set to false. If set to 'inline', the line numbers will be If you want to see All I had to do was to enable this formatter from the HTMLLegacy formatter used by Jekyll by default. Line 3 - Styles the line numbers so they are vertical and the whitespace is preserved. Let’s go through each step in detail. The BetterHtmlFormatter supports two styles:. Did you see it?! Without these lines, single-digit line, /* numbers will not line up with double-digit ones. Pygments has two available styles when outputting source code with line numbers enabled: table and inline. Yep, we’re going advanced. I'm on nanoc 3.6.9 and pygments.rb 0.5.4 (backed by pygments 1.6). Since the -O option argument is split at commas and expects the split values The naïve way to turn on line numbers with Rouge is to add the linenos parameter to the highlight Liquid tag: However, as pointed out on this page, this is not a good idea for various reasons. Default: True. How do you tame this majestic beast? Usually I don’t want to highlight this class, but I made an exception for Liquid: Line numbers. I used a simple plugin to enable them, which I downloaded from here and put in my _plugins folder. can then contain all characters: Filters are added to the token stream using the -F option: As you see, options for the filter are given after a colon. Whether line numbers should be shown: True/False. pygments-style. Remember that for each kind of highlighted code block mentioned above, there is a corresponding version that is not highlighted (like this). will print out python. Code fenced blocks, Pygments and line numbers with jekyll. Default: class. The step used when printing line numbers. So this will work regardless of whether you are using inline-highlighting or block highlighting, which have different HTML representations but are both wrapped in a .highlight class (see above). The format looks like this: It’s also possible to use three tildes instead of backquotes, because some people like to hold the Shift key. Keep this in mind before you choose to use this solution. Note: anonymous comments require approval. Jekyll. To get to the point: I wasn’t too happy with Pygments. For example, with my default highlighting settings, a Liquid code block would look like this: I didn’t like the tag openers ({% and %}). quote the option value in this case too, so that the shell doesn’t split it). If no specific Welcome back to my series of articles about Jekyll. it is usable as a command-line tool and as a library … and it highlights even Perl 6! /* Use a counter to generate the line numbers */, /* Hacky, but necessary. output encoding. inline places the line numbers directly in the source code output and can sometimes be undesirable as copy and paste will always copy the line numbers as well. Can be class (CSS classes) or style (inline styles). pygments-css. I’ll assume you’re using Jekyll with the default Markdown converter kramdown and syntax highlighter Rouge. If set to 'table', output line numbers as a table with two cells, one containing the line numbers, the other the whole code. This means that we can’t use CSS selectors, such as :last-of-type, to select, say, the last line number and give it a bottom border. It doesn’t seem like there is any way to generate line numbers using the GitHub format, which is a shame because it’s quicker to type and easier to read. © Copyright 2006-2020, Georg Brandl and Pygments contributors. For an explanation what -a means for a particular formatter, look for the arg argument for the formatter’s The -x flag enables custom lexers and formatters to be loaded It’s safe to install, I swear on my honor. as the input encoding. May 14, 2018 in this documentation) about a lexer, formatter or filter. What should have been easy turned out to be a royal pain in the bupkis.3 I’ll take you along an abbreviated version of the journey I went through so that you understand how I arrived at my current method. jekyll Default: 1. line_number_bg. 3. Stay calm, I’ll walk you through this. “What about GitHub-style code blocks?” No problem. ... For Pygments or Rouge you can use a stylesheet for Pygments, you can find an example gallery here or from its repository. names and supported file name extensions, styles and filters. It is a generic syntax highlighter suitable for use in code hosting, forums, wikis or other applications that need to … Now, if I were to use Pygments, I would have the option to output line anchors, using a CSS counter to generate line numbers for the anchors on each line. Call the highlight()function. Read more in the FAQ list or the documentation, or download the latest release. You have several methods at your disposal. That, my friends, was a wild highlighted code block in its natural habitat. “emacs” style), highlighting the Python file test.py to test.html: Lexer and formatter options can be given using the -O option: Be sure to enclose the option string in quotes if it contains any special shell They are compatible with Rouge, despite being made for Pygments (a Python-based syntax highlighter). I looked at Rouge’s source code to see if there was any way to do something like line anchors, but without the anchors. Now you can use the linenos option. •, Hello! Internally, Rouge uses something called a formatter to, uh, format the code as it goes through syntax highlighting. Line numbers¶ Pygments can generate line numbers for code blocks. For compatibility with Pygments 0.7 and earlier, every true value except 'inline' means the same as 'table' (in particular, that means also True). I also talk about Pygments in this article, although I recommend against using it. Examining the element for {%,2 I saw it has the class .p, which Rouge assigns to punctuation. Added “inencoding” option for lexers to override “encoding” analogous to “outencoding” (#800). If it is not given, output is Now, any time you want source code to have line numbers, you just need to include the linedivs option: What the devil?! I override some of the ‘pre’ tag settings as defined by bootstrap. See the Pygments stylesheet section to learn more about how the value class is handled. To use Pygments, first add the pygments.rb gem to Gemfile: and then make sure you have these lines in your _config.yml: Code highlighting mostly functions similarly whether you pick Rouge or Pygments, and even color themes work interchangeably between the two. That said, the high-level interface should not change significantly. Therefore, there’s a special -S option for generating style definitions. Fortunately, it’s pretty easy to do this programmatically with Rouge since it inserts a data-lang attribute, containing the name of the language, into the code element. css How do you highlight source code? So, I waved bye-bye to pygments.py and stuck with Rouge. true {% include JB/setup %} Update: With the Jekyll v1 release, the old plugin broke, so now you can find in this page the new code. expects a list value, separate the list entries with spaces (you’ll have to The command-line “pygmentize” tool now tries a little harder to find the correct encoding for files and the terminal (#979). I also gave the corner borders a radius.) Additionally, there was a bug in either Rouge or Jekyll that was completely breaking my pages when I used the linenos option. All you need is to install this plugin. the “colorful” style prepending a “.syntax” selector to all style rules. The other option is a setting that can mark line numbers as "special" with a span and class special. Turns out, Rouge does have a formatter that, instead of generating anchors before each line, wraps each line in its own div. if an output file name is given and has a supported extension). The -L option lists lexers, formatters, along with their short Pygments also has a few additional options in regards to line numbers. Clearly, this format doesn’t fit our needs. To get the latest version from pypi.org: This is a visual bug, as the code won’t be copied/pasted, but it would be nice to fix it for the benefit of dummies who use Safari: Oh yeah, and if you want to get top and bottom borders for line numbers you’ll have to do something like this: (Notice that I gave enough room for the line numbers to grow when they hit double-digits. Changing the styling for source code can be confusing, and hard to do without affecting another kind of code block. If you give an inencoding option, it will override encoding Default: “#eed” line_number_fg. table is the default output and creates a table output for lines with numbers. If you don’t give an encoding and have given an output file, the default Last tip before I let you go: it’s a nice thing to include the name of the programming language along with source code in order to avoid confusing readers. NOTE: As Chroma has just been released, its API is still in flux. It’s important. You can find ready-made themes on GitHub. Thank you for your attention – bye. How I did that: The basic format for this Liquid template is. commas or equals signs. Line 2 - The linenodiv pre tag styles the line numbers. First, make sure you have the highlight-linedivs plugin installed. In theory, line anchors should allow linking to specific line numbers (that’s what anchors are for), but if you have more than one code block then you’ll have anchors with duplicate names. As seen above, if you encoding for lexer and formatter is the terminal encoding or the default Created using, the Pygments documentation on Lexer development. Although Jekyll has switched away from Pygments, you can still opt to use it. TerminalFormatter is used. Changes: the structure of line number elements and styles was changed to improve styling all style definitions were moved to get_style_defs (and removed from CSSFILE_TEMPLATE) documentation for noclasses option was updated Style class received new attributes for: line numbers font color line numbers background color special line numbers font color special line numbers … Pygments for code highlighting, line numbers with CSS Counters and custom redcarpet plugin. Not so hard, you just need to type out the highlight Liquid tag. Can be class (CSS classes) or style (inline styles). It won’t highlight anything yet. For example, the HTML Note that any settings you set in a least-specific selector, like code {}, will take effect in a more specific selector, like figure.highlight pre code {}, if you don’t override or reset it. If set to 'inline', the line numbers will be integrated in the

 tag that contains the code (that setting is new in Pygments 0.8). from files relative to the current directory.        For example, you can use display: block; which will put the language on its own line. It’s based on my Emacs theme Nimbus. filter name and options must be one shell word, so there may not be any spaces as the output encoding. Line 4 - The ‘code’ class contains the actual code snippet. Here’s the default lineno option, inline: This works, but has two main visual and practical problems: 1. For example, here is some YAML highlighted with Pygments: This may not seem significant in itself, but I found Rouge to produce better output for every language I tried. Chroma takes source code and other structured text and converts it into … blogging If no output file name is given and -f is omitted, the The BetterHtmlFormatter supports two styles: linenos="table" (the default) — every line of the code is a separate table row (a 2xN table, as opposed to Pygments’ standard 2x1 table) This improves the appearance if the code contains characters with unusual line-height, and allows for … Using linenos with Pygments, the line numbers are placed in span blocks like the rest of the highlighted source code. The result looks like this: println!("Hello.");.  Really! CustomLexer or CustomFormatter, then specify it on the command line: You can also specify the name of your class with a colon: For more information, see the Pygments documentation on Lexer development. To be fair, the Jekyll docs barely mention syntax highlighting and the kramdown docs, if you even know they exist, are incomplete and outdated. ↩, Your browser’s dev tools can save a lot of time when examining elements. ↩, Apart from looking nice, line numbers are useful for referring to specific lines of code. Note that it’s ihighlight and not highlight. RTF. Fixes #1356. You can override the highlighting settings per language, which can be pretty useful if you have neuroticism and time on your hands. Wow. First, let’s cover the absolute basics. Added line-by-line “streaming” mode for pygmentize with the “-s” option. This means that we can’t use CSS selectors, such as :last-of-type, to select, say, the last line number and give it a bottom border. only one category, give it as an argument: The -H option will give you detailed information (the same that can be found I also provide a line between the line numbers and the code. Select the output format. You don’t need to update your Liquid tags when switching to Pygments – the format is still {% highlight lang linenos %}. The -N option guesses a lexer name for a given filename, so that. a number of output formats is available, among them HTML, RTF, LaTeX and ANSI sequences. This is all you need to do to access the attribute’s value: How you position the language name is up to you. Let me show you: where lang is one of these language codes. The line number of the first line. you didn’t give an explicit formatter name). The generated table to render the line numbers does not have a CSS class or any other way of differentiating it from regular tables, so that the styles above apply, resulting in a broken page. Okay, I won’t bore you with more details. (I don’t think there’s any way for the padding to dynamically grow in CSS.) My problem seemed one that was already reported and fixed, and yet I was running into an identical issue despite using the latest Jekyll version. output is written to the console), the default encoding for lexer and That’s impressive, and kind of sad. Anchor names that differ only in case may not appear in the same document. I wanted to write about this topic because existing blog posts provided poor or incorrect suggestions. formatter is the terminal encoding (sys.stdout.encoding). The step used when printing line numbers. Therefore, an option -P is provided (as of Pygments The recommendation by the above page is to just use the GitHub-style format, which supports highlighting but not line numbers. Syntax highlighting that looks nice.1. to be of the form name=value, you can’t give an option value that contains Pygments is a syntax highlighting package written in Python. Pygments tries to be smart regarding encodings in the formatting process: If you give an encoding option, it will be used as the input and it is usable as a command-line tool and as a library. 2. We can specify that the line numbers must be generated in table mode or inline mode. Pygments is a generic syntax highlighter written in Python - pygments/pygments. To create a full HTML document, including line numbers and stylesheet (using the “emacs” style), highlighting the Python file test.py to test.html: $ pygmentize -O full,style=emacs -o test.html test.py. pygments-promql. But if you use GitHub Pages, you should be aware of the disclaimer at the top of the Jekyll Plugins docs. The -f option selects a formatter (as with -l, it can also be omitted Fancy! get_style_defs() method. Create a file with a class named Default: 1. line_number_step. pygments-css. ANSI sequences (console output) LaTeX. The background colour (in “#123456” format) of the line number bar, or None to use the style background color. As for -O, the Controls what method is used for applying CSS to the tokens. Formatters normally don’t output full style information. Hope you enjoyed this brief overview of syntax highlighting in Jekyll. You can also do what I do and use absolute positioning to place the language name in a specific location relative to the code block itself. But you’d need to do a bit of work to make them look good and not be selectable (i.e. One is "line step" which, if set to a number n > 1, will print only every n th line number. Non-highlighted inline code, which looks like this, is the simplest: Highlighted inline code has an additional class: Non-highlighted code blocks, which look like this: Highlighted code blocks are the most complex: With this in mind, I use the following scheme to style each kind of code block: And that’s it in a nutshell. The above command could therefore also be given as: $ pygmentize -o test.html test.py. Content generated by CSS happens to be unselectable, so the hard part is just alignment and styling. omit this option. We must add the attribute linenums to the listing block in our markup. There is a nice blog post by Drews Ilcock that explains this technique. Better line numbers for Pygments HTML. A PromQL lexer for Pygments. After bumping my head on this for a while, I decided to give Pygments a try. line_number_start. parsing and formatting is fast. As a last resort, latin1 is used (which As you can see, the -l option explicitly selects a lexer. Usage is as follows: generates a CSS style sheet (because you selected the HTML formatter) for First we must add the document attribute source-highlighter and use the value coderay or pygments. lexer is known for that filename, text is printed. Sets the name of the color theme Pygments uses. Keep this … The text color of the line numbers (in “#123456”-like format). The highlighter used to be a different program called Pygments, but Pygments is written in Python and it was awkward to call it from Jekyll, a Ruby program. For automatically-highlighted blocks (those started by ::), line numbers must be switched on in a highlight directive, with the linenothreshold option:.. a number of output formats is available, including: HTML. How does this work? By default, Jekyll uses the (excellent) Pygments syntax highlighter for code blocks. The -o option gives an output file name. will pass through all non-ASCII characters). Don’t worry, it’s not a virus. written to stdout.  Is just alignment and styling few more languages than Rouge but doesn’t produce as or! Latest version from pypi.org: pygments-css is a syntax highlighting i’ll assume you’re Jekyll. Why mention inline highlighting if you stick with the “ -s ” option Plugins docs some. There who want to skip the explanation, head over to the:. Like Rouge work by wrapping each source code element in span blocks the! Your Liquid tags when switching to Pygments – the format is still { %,2 saw! From its repository do something like line anchors, I was back square. Hard to do some hacking the ‘ pre ’ tag settings as defined by bootstrap would to... Copyright 2006-2020, Georg Brandl and Pygments contributors you enjoyed this brief overview of syntax.... Post is for all the programmers out there who want to include source code code blocks are not in! Pygments – the format is still { %,2 I saw it has class... Not line numbers for the Python lexer, etc that: the basic format for this Liquid template is pygmentize! The GitHub-style format, which means no line numbers as `` special '' with a span and class.... Linenos that is also highlighted for the HTML formatter by default only outputs < >... Syntax highlighter written in Python - pygments/pygments how you position the language name up... Good syntax highlighting that, my friends, was a wild highlighted code block in our markup,... Span blocks like the rest of the color theme Pygments uses or context-aware syntax highlighting with short. Ansi sequences to the tokens format for this Liquid template is back to my of. Language it’s in has a few more languages than Rouge but doesn’t produce as nice-looking context-aware! Highlighters to create and format the line numbers so they are compatible with Rouge, despite being made for or! A span and class special are arranged when line numbers are placed in blocks. Not supported in Jekyll but doesn’t produce as nice-looking or context-aware syntax highlighting format the line numbers work wrapping! Follows: will print the help for the Pygments documentation on lexer development second! Looked at Rouge’s source code highlighter we can specify that the line at... List of available style names, see available Pygments style names, see available Pygments style names / numbers. The -x flag enables custom lexers and formatters to be loaded from relative. We must add the attribute linenums to the code: 1 mode inline! My _plugins folder this solution overview of syntax highlighting package written in Python you’re using Jekyll with default... 2018 • blogging CSS Jekyll •, Hello more details borders a radius. enjoyed this brief overview syntax... Grow in CSS. above problems our markup read more in the same.. Order to have inline code that is also highlighted for the Python lexer, etc my! Name is up to you pygments line numbers, line numbers at all code block good... Provided poor or incorrect suggestions the source code element in span classes wanted write... As of this writing, Rouge uses something called a formatter to, uh, format line. Part is just alignment and styling the FAQ list or the documentation, or download the version. That can mark line numbers with CSS Counters and custom redcarpet plugin to include source code on their.... Is usable as a command-line tool and as a last resort, latin1 is used ( which will pass all! My honor unselectable, so that language, which Rouge assigns to punctuation point: I wasn’t too with... Give an inencoding option, inline: this works well, it’s useful to inline! Be aware of the ‘ pre ’ tag settings as defined by.. Out the highlight Liquid tag there is a second argument to highlight a snippet! Had ruled out line anchors, I was back at square one highlight Liquid tag produce as nice-looking or syntax! The attribute’s value: how you position the language pygments line numbers in as it goes through syntax.... Although I recommend against using it, styles and filters - pygments/pygments this brief overview of syntax highlighting in.... Recommend against using it ; which will pass through all non-ASCII characters ) input encoding vertical and the whitespace preserved... Add the attribute linenums to the listing block in its natural habitat API is still in.. Source highlighters to create and format the code section counter to generate the numbers! Code highlighting, line numbers must be generated in table mode or inline mode we generate the line are! Supported in Jekyll latest release highlighter we can specify that the line numbers enabled. Text color of the line numbers are arranged when line numbers are enabled the. Defined by bootstrap Jekyll with the linenos option ’ s a special -s option for generating definitions! To do some hacking that said, the TerminalFormatter is used for applying CSS to the:! Steps: 1 # 800 ) inencoding ” option for lexers to override “ encoding analogous. That differ only in case may not appear in the FAQ list or documentation. Css classes ) or style ( inline styles ) -like format ) the. €“ download it here Rouge linenos parameter was broken and I had to do was to enable this formatter pygments line numbers. Article, although I recommend against using it for lines with numbers - pygments/pygments like line,. Generated by CSS happens to be loaded from files relative to the code as it goes syntax... In either Rouge or Jekyll that was completely breaking my Pages when I used a simple plugin enable... Table output for lines with numbers formatter used by the above problems the same document or! I would need to do something like line anchors, I won’t you... Lexers, formatters, along with their short names and supported file extensions! Where lang is one of those people. ↩ in my _plugins folder you’re using Jekyll the!, Georg Brandl and Pygments contributors are not supported in Jekyll as can. Over to the tokens of those people. ↩ make your own not so hard, you can use:. Faq list or the documentation, or download the latest version from pypi.org: pygments-css Pygments is a that. Mode or inline mode class.p, which means no line numbers are placed in span like., LaTeX and ANSI sequences the -l option lists lexers, formatters, along with short... You’D need to update your Liquid tags when switching to Pygments – the format is {... Rouge, I was back at square one, although I recommend against using it in my _plugins.. Languages than Rouge but doesn’t produce as nice-looking or context-aware syntax highlighting in.... Them look good and not be selectable ( i.e example, the line numbers please leave a comment below you. Was to enable them, which supports highlighting but not line up with double-digit ones in flux what is. Pygments and line numbers up with double-digit ones option is a setting that can mark line numbers are when! Same document classes ) or style ( inline styles ) do was to enable them, supports! Just need to type out the highlight Liquid tag the input encoding you GitHub... Lexers, formatters, along with their short names and supported file name is up to you generated. So they are compatible with Rouge pygments line numbers I was back at square.! Pre tag styles the line numbers in the same document my _plugins folder latest version from:. '' with a span and class special so they are compatible with Rouge, I was pygments line numbers at square.. Highlighted for the Pygments HTML formatter known for that filename, so that for. Liquid template is enjoyed this brief overview of syntax highlighting in Jekyll GitHub Pages, you should be aware the! Work by wrapping each source code output for lines with numbers /, *!, along with their short names and supported file name is up to you it are. Additionally, there was a bug in either Rouge or Jekyll that was completely breaking my Pages when used... -Like format ) this site was made by yours truly – download it here value... Okay, I decided to give Pygments a try it goes through syntax.. Padding to dynamically grow in CSS. using linenos with Pygments, the TerminalFormatter is used for CSS... That the line numbers it produces are less than satisfactory unwieldy workarounds avoid. Pygments style names Brandl and Pygments contributors, inline: this works, but two! Each code block’s HTML representation custom redcarpet plugin: I wasn’t too happy with Pygments, have! Table is the default syntax highlighter for Jekyll also gave the corner borders a radius. you... Known for that filename, so the hard part is just alignment and styling default lineno,... To just use the coderay or Pygments source code default: “ # 886 ” Pygments... Documentation on lexer development steps: 1 this topic because existing blog posts provided poor or incorrect.... Recommend against using it because existing blog posts provided poor or incorrect suggestions if no specific lexer is for. Be loaded from files relative to the current directory tool and as command-line... As the input encoding pygments.rb 0.5.4 ( backed by Pygments 1.6 ) code section and custom redcarpet plugin contains actual., see available Pygments style names, see available Pygments style names if no output name... Span > tags with class attributes yours truly – download it here a command-line tool and as library!

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