In my case I have this string that is displayed as a button label. "Already registered? **Login**"

       let parser = MarkdownParser(font: UIFont.systemFont(ofSize: 17))
        parser.automaticLinkDetectionEnabled = false
        parser.bold.color = UIColor.white
        parser.header.color = UIColor.white

My problem is that "Already registered?" is displayed in blue and "Login" is white as set by bold-attribute. How can the color for regular text be set? Why is it set to blue?

First of all: Awesome framework, thank you for open-sourcing it! 👍

When nesting emphasis and strong delimiters (i.e. bold and italic delimiters) as follows:

_**word**_

I would expect word to be formatted both bold and italic:

word

This is specified in the CommonMark Spec and as you can see above, it's also the default behavior on GitHub.

The MarkdownKit parser currently formats the Markdown input above as only italic:

word

I would suggest to change the parser's behavior according to the specification.

This solves issue #8 whereby 2 anomalies occurred constantly when parsing grave accent to represent markdown element code. For example, let c1 = this is code, c2 = this is code too

1. When either c1 or c2 occurs at the the beginning of a file, it will cause a runtime error.

2. When either c1 or c2 occurs somewhere within the file, it doesn't cause a runtime error but as explained in #8, it outputs a random string of numbers.

After further investigation, the culprit is in the regex string: "(?<!\\\\)(?:\\\\\\\\)*+(+)(._?[^]._?)(\1)(?!)"`. I am not good at regex yet but that's where the issue is. So, in my implementation, I modified the regex string and no anomaly occurs and thus no runtime error.

Hello,

I'm just trying to use your code. I download Example project but I have a compilation Error

ld: warning: directory not found for option '-F/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.3.sdk/Developer/Library/Frameworks'

Can you please help

The app is crashing on this format of link: [(William) Davenport Griffen](/artists/(william)-davenport-griffen)

The issue is with the name William in brackets. It seems that the framework treats (William) as a separate link.. instead of just a plain text. The app is crashing in the MarkdownLink.swift file on formatText function.

@bmoliveira

Currently library fails to build when targeting Mac Catalyst platform. It happens due to canImport(AppKit) pre-compile check which is true on Mac Catalyst, but many APIs like NSFont still are not available. This PR adds targetEnvironment checks.

I'm trying to install via Carthage on Xcode 12.2 and keep getting this error:

*** Building scheme "MarkdownKit-AppKit" in MarkdownKit.xcworkspace
*** Building scheme "MarkdownKit" in MarkdownKit.xcworkspace
Build Failed
	Task failed with exit code 1:
	/usr/bin/xcrun lipo -create /Users/tj/Library/Caches/org.carthage.CarthageKit/DerivedData/12.2_12B45b/MarkdownKit/1.7.0/Build/Intermediates.noindex/ArchiveIntermediates/MarkdownKit/IntermediateBuildFilesPath/UninstalledProducts/iphoneos/MarkdownKit.framework/MarkdownKit /Users/tj/Library/Caches/org.carthage.CarthageKit/DerivedData/12.2_12B45b/MarkdownKit/1.7.0/Build/Products/Release-iphonesimulator/MarkdownKit.framework/MarkdownKit -output /Volumes/VNStorage/Repos/iosSwitchbacks/switchbacks-ios/Carthage/Build/iOS/MarkdownKit.framework/MarkdownKit

This usually indicates that project itself failed to compile. Please check the xcodebuild log for more details: /var/folders/yt/zk5_9dxd08b_4gpddjpl6qx00000gn/T/carthage-xcodebuild.RtHQE3.log

Is this because Xcode 12.2 (Swift 5.3.1) is not supported? Or maybe arm64 architecture needs to be excluded?

If you go to File > Swift Packages > Add Package Dependency, paste in https://github.com/bmoliveira/MarkdownKit.git, click Next, leave it at the default up to 1.4.1 rule, click Next, you'll get an error stating:

https://github.com/bmoliveira/MarkdownKit.git has no Package.swift manifest for version 1.4.1 in https://github.com/bmoliveira/MarkdownKit.git

If you instead put in 1.7.0 as is implied in the Readme, you'll get an error stating:

Dependencies could not be resolved because no versions of 'MarkdownKit' match the requirement 1.7.0..<2.0.0 and root depends on 'MarkdownKit' 1.7.0..<2.0.0.

Steps to reproduce

1. Parse a markdown text containing links without explicit schemes:

let markdownParser = MarkdownParser()
let markdown = """
    Link with implicit scheme: old.reddit.com
    Link with explicit scheme: https://old.reddit.com/
    """
textView.attributedText = markdownParser.parse(markdown)

2. Observe that the link with the implicit scheme is formatted as a link
3. Select the link

Expected behaviour Either the link is opened in Safari, or the text is not formatted as a link at all

Actual behaviour

• The link is formatted as a link
• Selecting the link does nothing
• Printed to console: Could not find any actions for URL old.reddit.com without any result.

My suggestion would be to have an option for a default scheme for links that is added if the scheme is nil.

I have experienced a crash in the unescapeUTF16 method in String+UTF16.swift. The markdown that led to the crash can be found here: https://github.com/apple/swift-evolution/blob/master/proposals/0240-ordered-collection-diffing.md

The crash was found on the line let endIndex = index(self.startIndex, offsetBy: $0 + 4) in the following code snippet:

stride(from: 0, to: count, by: 4).forEach {
    let startIndex = index(self.startIndex, offsetBy: $0)
    let endIndex = index(self.startIndex, offsetBy: $0 + 4)
    let hex4 = String(self[startIndex..<endIndex])
    if let utf16 = UInt16(hex4, radix: 16) {
        utf16Array.append(utf16)
    }
}

Since the maintainer appears to have abandoned this, I have cloned and renamed this project, and merged most of the outstanding PRs manually. I also support Swift 4. New PRs are welcomed as well. https://github.com/davidlari/Haring

The parser fails to parse this string:**Kids ** has arrived at **UAT Test**

Expected result: Kids has arrived at Test

Actual result: Kids ** has arrived at ** UAT Test

Version 1.7.1 used

Parsing new lines inside 3 ticks ( ``` ) is returning with a weird format. It'll show a tick at the beginning and the end, and the content will format as if I had only used one tick.

If I try to parse: "``Why did the scarecrow win an award? Because he was outstanding in his field.``" The resulted string value is "뻊"

If I add a space at the beginning and pass in: " ``Why did the scarecrow win an award? Because he was outstanding in his field.``"

Then it parses properly.

Reproducible for the case when text has mixed text-decoration style with custom markdown element. In my case. I have the custom element that not supports by markdown be default - underline(++). I implement the custom markdown element for parsing (like MarkdownStrikethrough).

class MarkdownUnderline: MarkdownCommonElement {
	
	var font: MarkdownFont?
	var color: MarkdownColor?
	
	private static let regex = "(.?|^)(\\+\\+)(?=\\S)(.+?)(?<=\\S)(\\2)"

	var regex: String {
		return MarkdownUnderline.regex
	}
	
	public init(font: MarkdownFont?, color: MarkdownColor? = nil) {
		self.font = font
		self.color = color
	}
	
	public func match(_ match: NSTextCheckingResult, attributedString: NSMutableAttributedString) {
		attributedString.deleteCharacters(in: match.range(at: 4))

		var attributes = attributedString.attributes(
			at: match.range(at: 3).location,
			longestEffectiveRange: nil,
			in: match.range(at: 3)
		)

		attributes[.underlineStyle] = NSNumber.init(value: NSUnderlineStyle.single.rawValue)

		attributedString.addAttributes(attributes, range: match.range(at: 3))

		attributedString.deleteCharacters(in: match.range(at: 2))
	}
}

But parsing result is not correct, for example for text **_++Lorem ipsum++_** will be produced the attributed text:

_++Lorem ipsum++_

If I change the regex to (.?|^)(\\*|_)(?=\\S)(.+?)(?<=\\S)(\\2) ,that was implemented for fix, the parsing result is correct.