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Bash replace // doesn't handle anchors like Regex? Because it is glob-like


Bash replace // doesn't handle anchors like Regex? Because it is glob-like

By : TE_ARNITA
Date : November 19 2020, 03:01 PM
will be helpful for those in need From the bash manual (emphasis added):
code :
$ t1="hello there"
$ t2="there hello"
$ echo ${t1/#hello/goodbye}
goodbye there
$ echo ${t2/#hello/goodbye}
there hello


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Either convert a glob to regex or have Perl handle glob patterns

Either convert a glob to regex or have Perl handle glob patterns


By : Boy-zee
Date : March 29 2020, 07:55 AM
this will help Apparently, there's no neat Perl Guru trick for creating a regular expression from a glob. Drats.
The best I can do is find a CPAN module like Text::Glob that does it. However, Text::Glob doesn't do Ant style expanded globbing, so I'd have to modify it anyway. And, the code is no simpler than what I already have.
How to write a regex expression that replace anchors and links value

How to write a regex expression that replace anchors and links value


By : Daniel Stucki
Date : March 29 2020, 07:55 AM
regex replace urls with anchors ONLY if not already in anchors

regex replace urls with anchors ONLY if not already in anchors


By : Yoon Chuen Tang
Date : March 29 2020, 07:55 AM
Hope this helps I've seen similar questions asked before, but none with a working solution. , I think you need to do a two-pass operation. Split the source into
code :
PART1 <a href=...>blah></a> PART2 <a href=...>blah</a> PART3...
Python regex replace anchors

Python regex replace anchors


By : 45490sx
Date : March 29 2020, 07:55 AM
it fixes the issue I'm trying to rewrite the code I saw in this answer: ,
where I want to replace something like this:
code :
<a href="javascript:rt(2061)">Download</a>
<a href="#" onclick="javascript:ra('Name of object one')" title="Some title Text">Name of Object two</a>`
pattern = re.compile('<a href="#" onclick="javascript:ra\('(:?[a-zA-Z0-9 +)'\)" title="Some title Text">([a-zA-Z0-9 ]+)</a>');
                                                          | | |         |  ^ unescaped quote (in the string passed to re.compile() )
                                                          | | |         |
                                                          | | ^---------^ you didn't close the character class (as in [a-z]).. add a "]"
                                                          | ^ correct syntax is (?: pattern ) ... However, no point in using it here
                                                          ^ another unescaped quote
#python 3.4.3
import re;

rawtable = '<a href="#" onclick="javascript:ra(\'Name of object one\')" title="Some title Text">Name of Object two</a>';

pattern = re.compile('<a href="#" onclick="javascript:ra\(\'[a-zA-Z0-9 ]+\'\)" title="Some title Text">([a-zA-Z0-9 ]+)</a>');

rawtable = pattern.sub(r'\1', rawtable);
print(rawtable);
Name of Object two
Weird behavior of BASH glob/regex ranges

Weird behavior of BASH glob/regex ranges


By : antts
Date : March 29 2020, 07:55 AM
I hope this helps you . It certainly had to do with setting of your locale. An excerpt from the GNU bash man page under Pattern Matching
code :
LC_ALL=C var='ABCDabcd0123'
echo "${var//[A-Z]/}"
abcd0123
LC_ALL=C; for l in {a..z}; do [[ $l =~ [A-Z] ]] || echo $l; done
[[ a =~ [A-Z] ]] ; echo $?
1
[[ b =~ [A-Z] ]] ; echo $?
1
[[ a =~ [a-z] ]] ; echo $?
0
[[ b =~ [a-z] ]] ; echo $?
0
echo "${var//[[:upper:]]/}"
abcd0123
for l in {a..z}; do [[ $l =~ [[:upper:]] ]] || echo $l; done
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