Multiple new line characters are ignored about tsmarkdownparser

[darrarski]

As a temporary workaround, I created NSString category that removes duplicated new line characters from string:

NSString+StringByRemovingDuplicatedNewLineCharacters.h:

#import <Foundation/Foundation.h>
@interface NSString (StringByRemovingDuplicatedNewLineCharacters)
- (NSString *)stringByRemovingDuplicatedNewLineCharacters;
@end

NSString+StringByRemovingDuplicatedNewLineCharacters.m:

#import "NSString+StringByRemovingDuplicatedNewLineCharacters.h"
@implementation NSString (StringByRemovingDuplicatedNewLineCharacters)
- (NSString *)stringByRemovingDuplicatedNewLineCharacters
{
    NSString *newLineCharacter = @"\n";
    NSString *pattern = [NSString stringWithFormat:@"(%@( ){0,}){2,}", newLineCharacter];
    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:pattern
                                                                           options:0
                                                                             error:nil];
    return [regex stringByReplacingMatchesInString:self
                                           options:0
                                             range:NSMakeRange(0, self.length)
                                      withTemplate:newLineCharacter];
}
@end

I am using this category to prepare markdown string before passing it to TSMarkdownParser.

[Coeur]

Hello. Thanks for reporting. I'll look into it today.

[Coeur]

I've made this test:

- (void)testDefaultH1DoubleNextLine {
    NSAttributedString *attributedString = [self.standardParser attributedStringFromMarkdown:@"# Header\n\nParagraph"];
    UIFont *font = [attributedString attribute:NSFontAttributeName atIndex:12 effectiveRange:NULL];
    UIFont *expectedFont = [UIFont systemFontOfSize:12];
    XCTAssertNotNil(font);
    XCTAssertEqualObjects(font, expectedFont);
    XCTAssertEqual(font.pointSize, 12.f);
    XCTAssertEqualObjects(attributedString.string, @"Header\n\nParagraph");
}

It is successful. So I can't reproduce your issue with unit testing. Can you provide the iOS version, Xcode version, and the exact string your are parsing?

[Coeur]

I've added a visual Example project with a ViewController on Master branch. And I can't reproduce the issue visually.

[darrarski]

You are right. The problem was not connected to TSMarkdownParser itself, but it was a result of my configuration.
I am not using [TSMarkdownParser standardParser], because I want to set up parsing style myself. I made a mistake, and called method addHeaderParsingWithLevel:formattingBlock: with level 0 (zero). This caused invalid formatting.
Sorry I bothered you.

[Coeur]

No problem.
To tell the truth, I don't use standardParser either. ;)