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Showing with 33 additions and 3 deletions.
  1. +24 −0 README.md
  2. +9 −3 autoload.vim
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24 README.md
@@ -166,6 +166,28 @@ Every time the plug-in executes it will time how long the execution takes and
add the results to Vim's message history, which you can view by executing the
[:messages][messages] command.
+### Failed to highlight tags because pattern is too big!
+
+If the `easytags.vim` plug-in fails to highlight your tags and the error
+message mentions that the pattern is too big, your tags file has grown too
+large for Vim to be able to highlight all tagged identifiers! I've had this
+happen to me with 50 KB patterns because I added most of the headers in
+`/usr/include/` to my tags file. Internally Vim raises the error [E339: Pattern
+too long] [E339] and unfortunately the only way to avoid this problem once it
+occurs is to reduce the number of tagged identifiers...
+
+In my case the solution was to move most of the tags from `/usr/include/` over
+to project specific tags files which are automatically loaded by Vim when I
+edit files in different projects because I've set the ['tags' option]
+[tags_option] as follows:
+
+ :set tags=./.tags;,~/.vimtags
+
+Once you've executed the above command, Vim will automatically look for a file
+named `.tags` in the directory of the current file. Because of the `;` Vim also
+recurses upwards so that you can nest files arbitrarily deep under your project
+directories.
+
## Contact
If you have questions, bug reports, suggestions, etc. the author can be
@@ -185,6 +207,7 @@ This software is licensed under the [MIT license] [mit_license].
[ctags]: http://en.wikipedia.org/wiki/Ctags
[ctags_support]: http://ctags.sourceforge.net/languages.html
[cursorhold]: http://vimdoc.sourceforge.net/htmldoc/autocmd.html#CursorHold
+[E339]: http://vimdoc.sourceforge.net/htmldoc/message.html#E339
[exuberant_ctags]: http://ctags.sourceforge.net/
[hardlinks]: http://en.wikipedia.org/wiki/Hard_link
[ide]: http://en.wikipedia.org/wiki/Integrated_development_environment
@@ -195,6 +218,7 @@ This software is licensed under the [MIT license] [mit_license].
[shell]: http://peterodding.com/code/vim/shell/
[symlinks]: http://en.wikipedia.org/wiki/Symbolic_link
[system]: http://vimdoc.sourceforge.net/htmldoc/eval.html#system()
+[tags_option]: http://vimdoc.sourceforge.net/htmldoc/options.html#'tags'
[vim]: http://www.vim.org/
[vim_scripts_entry]: http://www.vim.org/scripts/script.php?script_id=3114
[vim_support]: http://ftp.vim.org/vim/runtime/syntax/
View
12 autoload.vim
@@ -1,6 +1,6 @@
" Vim script
" Maintainer: Peter Odding <peter@peterodding.com>
-" Last Change: June 16, 2010
+" Last Change: July 10, 2010
" URL: http://peterodding.com/code/vim/easytags
let s:script = expand('<sfile>:p:~')
@@ -114,8 +114,14 @@ function! easytags#highlight_cmd() " {{{2
if matches != []
call map(matches, 'xolox#escape#pattern(get(v:val, "name"))')
let pattern = tagkind.pattern_prefix . '\%(' . join(xolox#unique(matches), '\|') . '\)' . tagkind.pattern_suffix
- let command = 'syntax match %s /%s/ containedin=ALLBUT,.*String.*,.*Comment.*'
- execute printf(command, hlgroup_tagged, escape(pattern, '/'))
+ let template = 'syntax match %s /%s/ containedin=ALLBUT,.*String.*,.*Comment.*'
+ let command = printf(template, hlgroup_tagged, escape(pattern, '/'))
+ try
+ execute command
+ catch /^Vim\%((\a\+)\)\=:E339/
+ let msg = "easytags.vim: Failed to highlight %i %s tags because pattern is too big! (%i KB)"
+ call xolox#warning(printf(msg, len(matches), tagkind.hlgroup, len(pattern) / 1024))
+ endtry
endif
endfor
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