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How to restrict find-tag-regexp to search only the symbol part of TAGS?
From: |
Sam Halliday |
Subject: |
How to restrict find-tag-regexp to search only the symbol part of TAGS? |
Date: |
Mon, 17 Aug 2015 06:02:03 -0700 (PDT) |
User-agent: |
G2/1.0 |
Hi all,
I am getting a lot of false positives in my ctags lookups because a symbol
appears in the line that matches another symbol.
For example, this is a line from a TAGS file for a Scala project
val request = TypeAtPointReq(file, OffsetRange(100)):
RpcRequest^?request^A36,797
now, the actual symbol here is "request". Elsewhere are these lines:
case class OffsetRange(from: Int, to: Int)^?OffsetRange^A338,9435
object OffsetRange extends ((Int, Int) => OffsetRange)
{^?OffsetRange^A340,9479
and they are both for the symbol "OffsetRange".
The problem is that if I find-tags for "OffsetRange" I go to the line for
"request" which is just wrong.
Is there any way to restrict the find-tags matching to the name of the symbol
rather than its "description"?
Unfortunately, it looks to me like `find-tag` explicitly only searches the
first column and never looks at the tag itself. That's nasty.
>From etags-tags-completion-table
;; This monster regexp matches an etags tag line.
;; \1 is the string to match;
;; \2 is not interesting;
;; \3 is the guessed tag name; XXX guess should be better eg DEFUN
;; \4 is not interesting;
;; \5 is the explicitly-specified tag name.
;; \6 is the line to start searching at;
;; \7 is the char to start searching at.
I've asked a variant of this question on stackexchange, linking for convenience:
http://emacs.stackexchange.com/questions/14808
Best regards,
Sam
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