[TxMt] Reformat comment command

[James Edward Gray II]

On Aug 23, 2006, at 4:33 PM, Alan Schussman wrote:

>> Probably better to grab the comment character from the start of  
>> the input. Otherwise there is a more full mapping in the “Continue  
>> Line Comment” snippet in the Source bundle.
>
> Grabbing the start of the input works well, and it means setting  
> the comment parameter based on what actually sits at the beginning  
> of the comment scope, so that it will catch "%comment" or "%  
> comment" or "%% comment". Nice.

Yeah, this seems clever.  I think we need to make your regex for this  
a little more lenient though...

>> The line can be:
>>
>>     text = `ruby "#{ENV["TM_SUPPORT_PATH"]}/bin/rubywrap.rb" # 
>> {flags}`
>
> Here's where I go "huh." That works, but 1) I don't at all get how  
> the input is passed to the command; and 2) if I call on STDIN.read  
> prior to this line (by using it to get the beginning of the input),  
> then that line fails to get any input, and I have to manually pipe  
> the text back into it. What's happening there?

Well, if you call read(), you consume the input, so it's not there to  
pass on to the child process.

>>> I also added a gsub to the command because it was eating latex  
>>> math and R symbols ($). There's probably a better solution to that.
>>
>> Likely because of the Insert as Snippet -- but the e_sn should  
>> take care of that.
>>
>> I am however not sure inserting as snippet is ideal -- I reckon  
>> this was to preserve the indent, but maybe better to Replace Text  
>> and have the command indent properly.
>
> Excellent -- thanks for pointing out what e_as was doing. When  
> inserting as a snippet, e_sn does the job, and replacing the text  
> instead of inserting as snippet also works, though you're right  
> that it doesn't re-indent before the comment.

Hmm, I think you are still having trouble understanding where to use  
these:

   e_sh(): for data headed to the shell
   e_sn(): for data about to be shown as a TextMate snippet

Here's the code I just moved into the Source bundle.  Let me know if  
this is working please:

#!/usr/bin/env ruby

$LOAD_PATH << "#{ENV["TM_SUPPORT_PATH"]}/lib"
require "escape"
require "exit_codes"

ctext = STDIN.read
if ctext =~ /^\s*([^\s\w]+\s*)/
   cstring = $1
else
   TextMate.exit_show_tool_tip("Unable to determine comment character.")
end

flags = %Q{ -p "#{cstring}"}
flags += " --retabify" if ENV["TM_SOFT_TABS"] == "NO"

command = "ruby #{e_sh(ENV["TM_SUPPORT_PATH"])}/bin/rubywrap.rb # 
{flags}"
text    = open("| #{command}", "r+") do |wrapper|
   wrapper << ctext
   wrapper.close_write
   wrapper.read
end

print e_sn(text)

__END__

James Edward Gray II