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The Lounge What is on Your Mind? Update on vB3 Migration to Discourse - Issues and Status of BBCode Transformations Post 303045639 by Neo on Sunday 5th of April 2020 10:39:09 AM
Old 04-05-2020
Well, as a update, this earlier MariaDB REGEX was flawed, my bad.

Code:
UPDATE post SET  pagetext= LOWER(REGEXP_REPLACE(pagetext,'\\[ATTACH\\](.*)\\[\\/ATTACH\\]', '[IMG]https://www.unix.com/attachment.php?attachmentid=\\1[/IMG]'));

Should have been

Code:
UPDATE post SET  pagetext= REGEXP_REPLACE(pagetext,'\\[ATTACH\\](.*?)\\[\\/ATTACH\\]', '[IMG]https://www.unix.com/attachment.php?attachmentid=\\1[/IMG]');

Using the LOWER directive not only worked on the REGEX, but on all text in the post, moving all text to lower case (unexpectedly). That will be fixed after 12 hours of rebaking the 1M posts.

In addition, my original REGEX was too greedy and I had to add the ? to make it less greedy. Somehow, I missed that during initial testing.

Thanks to @Peasant for catching that bug quickly today.

We are "mind warped" writing and rewriting all this (new to us) Ruby migration code. The extra eyes, fresh perspectives, and bug hunting all are much appreciated and valuable contributions to the final migration success (whenever that happens, LOL)
 

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RAKE(1) 						 Ruby Programmers Reference Guide						   RAKE(1)

NAME
rake -- Ruby Make SYNOPSIS
rake [--f Rakefile] [--version] [-CGNPgnqstv] [-D [PATTERN]] [-E CODE] [-I LIBDIR] [-R RAKELIBDIR] [-T [PATTERN]] [-e CODE] [-p CODE] [-r MODULE] [--rules] [variable=value] target ... DESCRIPTION
Rake is a simple ruby(1) build program with capabilities similar to the regular make(1) command. Rake has the following features: o Rakefiles (Rake's version of Makefiles) are completely defined in standard Ruby syntax. No XML files to edit. No quirky Makefile syntax to worry about (is that a tab or a space?). o Users can specify tasks with prerequisites. o Rake supports rule patterns to synthesize implicit tasks. o Flexible FileLists that act like arrays but know about manipulating file names and paths. o A library of prepackaged tasks to make building rakefiles easier. OPTIONS
--version Display the program version. -C --classic-namespace Put Task and FileTask in the top level namespace -D [PATTERN] --describe [PATTERN] Describe the tasks (matching optional PATTERN), then exit. -E CODE --execute-continue CODE Execute some Ruby code, then continue with normal task processing. -G --no-system --nosystem Use standard project Rakefile search paths, ignore system wide rakefiles. -I LIBDIR --libdir LIBDIR Include LIBDIR in the search path for required modules. -N --no-search --nosearch Do not search parent directories for the Rakefile. -P --prereqs Display the tasks and dependencies, then exit. -R RAKELIBDIR --rakelib RAKELIBDIR --rakelibdir RAKELIBDIR Auto-import any .rake files in RAKELIBDIR. (default is rakelib ) -T [PATTERN] --tasks [PATTERN] Display the tasks (matching optional PATTERN) with descriptions, then exit. -e CODE --execute CODE Execute some Ruby code and exit. -f FILE --rakefile FILE Use FILE as the rakefile. -h --help Prints a summary of options. -g --system Using system wide (global) rakefiles (usually ~/.rake/*.rake ). -n --dry-run Do a dry run without executing actions. -p CODE --execute-print CODE Execute some Ruby code, print the result, then exit. -q --quiet Do not log messages to standard output. -r MODULE --require MODULE Require MODULE before executing rakefile. -s --silent Like --quiet, but also suppresses the 'in directory' announcement. -t --trace Turn on invoke/execute tracing, enable full backtrace. -v --verbose Log message to standard output (default). --rules Trace the rules resolution. SEE ALSO
ruby(1) make(1) http://rake.rubyforge.org/ REPORTING BUGS
Bugs, features requests and other issues can be logged at <http://onestepback.org/redmine/projects/show/rake>. You will need an account to before you can post issues. Register at <http://onestepback.org/redmine/account/register>. Or you can send an email to the author. AUTHOR
Rake is written by Jim Weirich <jim@weirichhouse.org> UNIX
November 7, 2012 UNIX
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