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problem with autotemplate regex with capture group reference #1379

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veripoolbot opened this issue Dec 27, 2018 · 2 comments
Closed

problem with autotemplate regex with capture group reference #1379

veripoolbot opened this issue Dec 27, 2018 · 2 comments
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Author Name: David Rogoff
Original Redmine Issue: 1379 from https://www.veripool.org

Original Assignee: Wilson Snyder (@wsnyder)

Hi.

I use AUTO_TEMPLATE all the time - often with complex patterns. However, I'm trying something new and can't get it to work. I'm instantiating a tool-generated register block that has lots of extra prefix characters I'm trying to remove. For most, I have something like this, which works:

 .prefix_to_remove_\(.*\)   (\1),

However, for a large group of registers, the tool-generated name is

 prefix_to_remove_<name>_<name>

which should become

 <name>

I tried using a capture group to find the repeated like this, but get parsing errors from verilog-mode:

 .prefix_to_remove_\(.*\)_\1   (\1),

I tried some variations of extra back-slashes to escape things but can't get it to work.

I was using this website as a reference:

 https://www.emacswiki.org/emacs/RegularExpression

Thanks for any help!

David
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Original Redmine Comment
Author Name: David Rogoff
Original Date: 2018-12-28T01:15:12Z

I just confirmed that

 isearch-forward-regexp

works as expected with

 .prefix_to_remove_\(.*\)_\1

but c-c c-a returns the error

 cond: myfile.sv:1534: AUTO_TEMPLATE parsing error: .prefix_to_remove_\(.*\)_\1           (new_prefix_\1),

I even tried

 .prefix_to_remove_\(.*\)_\1   (ZZZ),

to make sure the problem wasn't with the replacement side but that generated the same error.

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Original Redmine Comment
Author Name: Wilson Snyder (@wsnyder)
Original Date: 2019-01-02T23:02:42Z

Fixed in git in verilog-mode-2019-01-02-47b88f2-vpo.

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