Apply GtkTextTag to next insertion (e.g. how to insert signal handler after default handler)

[mlalkaka (Malcolm Lalkaka)]

Hello,

I’m trying to use GtkTextView/GtkTextBuffer along with GtkTextTag to change the formatting of text. But all the examples I can find only show how I can use GtkTextTag to change the formatting of text already in the buffer. How can I extend the GtkTextTags at the cursor to whatever is inserted next?

Essentially, this is the same question as this post:

Let GtkTextTag grow with insertion

Hi, currently i try to let a GtkTextTag grow at the end of the already applied range but surprisingly it does not grow at all. If i insert text inbetween it grows correctly without further ado. But at the beginning and at the end it isn’t applied anymore. Any idea how to do that correctly? [example] I know from a technically point of view it is not easy to do because when does it stop when i as user don’t want to apply the tag anymore. I just need an idea how to do this practically without ma…

But that post received no responses, and I can’t reply to it anymore, so I’m trying again .

One way I thought of solving this was if I could connect my own signal handler to the “insert-text” signal after the default signal handler. By that point, the new text would be in the buffer, and I could extend the tags to the new text. But according to the documentation, the default signal handler runs last.

1. Is there a way to insert my own signal handler after the default handler?
2. Is there another way to accomplish this?

Thank you!

[mlalkaka (Malcolm Lalkaka)]

I figured out how to accomplish this. For posterity, I’ll describe it here. Rather than connecting to the “insert-text” signal using text_buffer.connect (in Python), I used text_buffer.connect_after. This allowed me to run my own signal handler after the default signal handler, where I could extend the previous tags to the newly inserted text, now that the default signal handler had added it to the buffer.