Re: Pattern alternation on entire line

[Tom Robinson]

Ah, thanks Sam!  (and Jean-Christophe)


> On 2020-02-11, at 11:12, Sam Hathaway  wrote:
> 
> ^ and $ bind more tightly than |.
> 
> you want
> 
> ^(s|(e?h?))$

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Re: Pattern alternation on entire line

[Jean-Christophe Helary]

> On Feb 11, 2020, at 6:58, Tom Robinson  wrote:
> 
> What have I missed here guys?
> 
> I want to match entire lines which are empty, contain a single ’s’, or 
> contain ‘e’ and/or ‘h’ (in that order):
> 
> e
> h
> eh
> s
> 
> ehs
> he
> x
> 
> The first 5 lines should match (including the empty line), last 3 shouldn’t.
> 
> But despite the caret anchor, my pattern is catching the ending of unwanted 
> lines:
> 
> ^s|(e?h?)$

Tom,

The results are

[e]
[h]
[eh]
[s]
[]
ehs
h[e]
x
[]

So, it looks like the regex works like this:

^s

or

(e?h?)$

This one: ^s$|^(e?h?)$ seems to do what you want.


Jean-Christophe Helary
---
http://mac4translators.blogspot.com @brandelune


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Re: Pattern alternation on entire line

[Sam Hathaway]

`^` and `$` bind more tightly than `|`.

you want

```
^(s|(e?h?))$
```

On 10 Feb 2020, at 16:58, Tom Robinson wrote:


What have I missed here guys?

I want to match entire lines which are empty, contain a single 
’s’, or contain ‘e’ and/or ‘h’ (in that order):


e
h
eh
s

ehs
he
x

The first 5 lines should match (including the empty line), last 3 
shouldn’t.


But despite the caret anchor, my pattern is catching the ending of 
unwanted lines:


^s|(e?h?)$

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request or need technical support, please email 
"supp...@barebones.com" rather than posting here. Follow @bbedit on 
Twitter: 

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Pattern alternation on entire line

[Tom Robinson]

What have I missed here guys?

I want to match entire lines which are empty, contain a single ’s’, or contain 
‘e’ and/or ‘h’ (in that order):

e
h
eh
s

ehs
he
x

The first 5 lines should match (including the empty line), last 3 shouldn’t.

But despite the caret anchor, my pattern is catching the ending of unwanted 
lines:

^s|(e?h?)$

-- 
This is the BBEdit Talk public discussion group. If you have a feature request 
or need technical support, please email "supp...@barebones.com" rather than 
posting here. Follow @bbedit on Twitter: 
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