r - How can I get Emacs ess to recognize a query string (within quotes) as code? -


background

i have function dbquery simplifies process of querying mysql database within r.

dbquery <- function(querystring) {   dvr <- dbdriver("mysql")   con <- dbconnect(dvr, group = "databasename")   q <- dbsendquery(con, querystring)   data <- fetch(q, n = -1)   return(data) }

thus can send:

dbquery(querystring = "select field_1, field_2, field_3                         table_a join table_b on =                         join table_c on =                         field_4 in (1,2,3);"

however, variable querystring must contained within quotes. makes emacs ess not nicely indent queries if in sql mode - or if there no quotes in ess-r mode.

question

is possible ess this? perhaps writing function accept query without quote (and add quotes within function), or perhaps adding .emacs or ess.el?

i think want in mmm mode. name suggests: multimajormode mode allows have multiple modes on different regions of same buffer.

i recommend checkout examples in http://www.emacswiki.org/emacs/htmlmodedeluxe give idea how in case (you might want add comment in code around sql mmm can find sql code).

you have guess (untested):

(require 'mmm-mode) (mmm-add-group      'sql-in-ess      '(              (sql-query                     :submode sql-mode                     :face whateveryouwant                     :front "#sql_query>"                     :back "#<sql_query")) (add-to-list 'mmm-mode-ext-classes-alist '(ess-mode nil sql-in-ess))

however, might overkill, unless happens lot have complex sql queries in r code.


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