put the ctags language defs into a file instead of lengthy command line

[tarzanek]

the ctags command line is TOO LONG:
https://github.com/OpenGrok/OpenGrok/blob/master/src/org/opensolaris/opengrok/analysis/Ctags.java#L88

we should write this into a file and use the file and --options param of ctags:
http://docs.ctags.io/en/latest/optlib.html

[vladak]

This would clash with user configurable options already present in Ctags#initialize():

242              /* Add extra command line options for ctags. */
243              if (CTagsExtraOptionsFile != null) {
244                  LOGGER.log(Level.INFO, "Adding extra options to ctags");
245                  command.add("--options=" + CTagsExtraOptionsFile);
246              }

I.e. the file needs to be generated by merging user config.

[tarzanek]

I was hoping 2 --options can be used ;)

[vladak]

As long as the double option works for both Exuberant and Universal ctags fine with me.

[tarzanek]

(I don't know if 2 --options can be used, I was just joking, anyways, this should be investigated, since I am not sure if all definitions are being used right now)

[cross]

Is there any status on this? Old open bug. I'm trying to track down some warnings I'm getting from ctags, so how these are all specified may come into play...

[masatake]

You can specify multiple option files like: https://github.com/sourcegraph/sourcegraph/tree/df2c4da895f6fb7935e8858f7a87ff403fdd11c1/cmd/symbols/.ctags.d .