Remove a code line from Rprofile.site .First

Goes through Rprofile.site text, finds a line of code - and removes it.

remove_from_.First_in_Rprofile.site(code, fixed = TRUE, ...)

Arguments

code	A character scalar with code to add at the beginning of the .First function in Rprofile.site
fixed	passed to grep
...	passed to grep

Value

logical. Did we remove that line or not (in case it was not there)

References

https://stackoverflow.com/questions/1395301/how-to-get-r-to-recognize-your-working-directory-as-its-working-directory https://stackoverflow.com/questions/1189759/expert-r-users-whats-in-your-rprofile http://www.noamross.net/archives/2012-11-02-rprofile/ http://www.statmethods.net/interface/customizing.html

Examples

if (FALSE) {
is_in_.First_in_Rprofile.site("suppressMessages(library(installr))") # FALSE
add_to_.First_in_Rprofile.site("suppressMessages(library(installr))")
is_in_.First_in_Rprofile.site("suppressMessages(library(installr))") # TRUE
remove_from_.First_in_Rprofile.site("suppressMessages(library(installr))")
is_in_.First_in_Rprofile.site("suppressMessages(library(installr))") # FALSE
# this would still leave .First
}