QPlainTextEdit removes carriage returns "\r"

amadeok

Hello
It seems that when text is entered to a QPlainTextEdit the carriage returns "\r" are lost.
I wrote a program to test:


int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QPlainTextEdit * text_edit = new QPlainTextEdit();
    QString str = "First line";
    str.append((QChar)13);
    str.append((QChar)10);
    str.append("second line");
    qDebug() << str;
    qDebug() << "original size of string : " << str.size();
    text_edit->document()->setPlainText(str);
    text_edit->show();

    QString str_from_text_edit = text_edit->document()->toPlainText();
    qDebug() << "size of string from text edit: " << str_from_text_edit.size();

    for (int g = 0; g < str.size(); g++)
        if (str[g] != str_from_text_edit[g])
        {
            qDebug() << "Different at character number " << g;
            break;
        }
    return a.exec();
}

This is a problem for me because i'm working on a search tool and if the carriage returns are lost the positions on the file stream i found before using find() are no longer usable, and i cannot highlight the results in the QPlainTextEdit.
This was discussed here as well:
https://forum.qt.io/topic/42464/qplaintextedit-eats-line-endings/6
the last post there suggest to inherit the class and override the function QTextCursor::insertText , hopefully this won't break anything?

JonB

@amadeok said in QPlainTextEdit removes carriage returns "\r":

the positions on the file stream i found before using find() are no longer usable

What find()?

You are presumably showing a text file. And opening it as a text file. In C++ \r\n is reduced to \n under Windows. QPlainTextEdit will do the same if presented with \r\n. You would be best doing whatever searching/finding against the stream as a text file, or against whatever is actually in the QPlainTextEdit.

JKSH

@amadeok said in QPlainTextEdit removes carriage returns "\r":

the positions on the file stream i found before using find()

The discussion here still applies: https://forum.qt.io/topic/129758/display-a-std-string-in-a-qlineedit-in-qt

Use QString::indexOf() instead of std::find()

amadeok

@JonB
Hi thanks for replies. I was parsing the text from Apache Tika , and so the \r was not removed. calling text.replace("\r\n", "\n"); before doing the search was a good workaround