Selectively Highlight lines in source code block

Question

I use emacs org-mode and find feature of source code blocks extremely useful. However, If I want to say highlight a couple of lines in my source code block, is it possible to achieve? e.g.

#+BEGIN_SRC java
int i = 0;
m() //this is new call
#+END_SRC

Here when I export my org-mode to HTML or some other format, I want

m() //this is new call

to stand out. The intention is convey your message as clearly as possible.

Answer 1

One option for highlighting (not specific to org-mode) would be the built in hi-lock commands. You can use commands interactively to highlight a line or phrase matching a pattern, then save those patterns in the file for future use.

For example:

• M-s h l this is a new call to highlight the line

• M-s h w to write the current hi-lock patterns to the file

If you close and then re-open the file, you can run M-x hi-lock-mode and have the option to read the patterns from the file and re-apply them. If you always want this you can set up an org-mode hook to enable hi-lock.

See Highlight Interactively in the Emacs manual for details.