Dear list,
I would like to know if there is any way to include xterm escape sequences in
R's prompt using options( prompt= XXX, continue= XXX ), where XXX can
contain, for example, "\033[1;31mRed" for chancing text color to red
(see http://www.frexx.de/xterm-256-notes/).
If you do this, the color escape sequences work (with an appropriate terminal
emulator, e.g., xterm under Linux), providing you with a colored R prompt.
However, when using the command history (arrow up/down) the edit line gets
messed up because the algorithm counts the escape sequence not as a single char
but as multiple. Thus, I was wondering if there would be any way to tell
options(prompt) not only the string but also the number of characters in the
string (of course, defaulting to strlen).
The specific reason I ask this question is because I have recently written a
gedit plug-in for R, allowing it to become a lightweight IDE for R
(http://sourceforge.net/projects/rgedit/) and one feature I would like to have
is colored prompts (to make the R console easier to navigate through). Alas, as
I said before, using options() with escape sequences kind of works as long as
you don't use the command history (implemented in my rgedit but disabled by
default).
Thanks you in advance,
Dan
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