Get Comment Prefix for File Extension

Returns the single-line comment prefix for a given file extension. Falls back to # for unknown extensions.

Usage

get_comment_prefix(ext)

Arguments

ext

Character string of the file extension (without dot)

Value

Character string of the comment prefix

Examples

get_comment_prefix("r")    # Returns "#"
#> [1] "#"
get_comment_prefix("sql")  # Returns "--"
#> [1] "--"
get_comment_prefix("js")   # Returns "//"
#> [1] "//"
get_comment_prefix("tex")  # Returns "%"
#> [1] "%"
get_comment_prefix("xyz")  # Returns "#" (fallback)
#> [1] "#"