Issue in man page isalpha.3

Issue in man page isalpha.3

[Helge Kreutzmann]

Without further ado, the following was found:

Issue:    I<(isalpha(c)\\ || \\ isdigit(c))> → B<(isalpha(>I<c>B<) || isdigit(>I<c>B<))>

"checks for an alphanumeric character; it is equivalent to I<(isalpha(c)\\ ||"
"\\ isdigit(c))>."

Re: Issue in man page isalpha.3

[Alejandro Colomar]

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Hi Helge,

On Wed, Dec 24, 2025 at 02:38:20PM +0000, Helge Kreutzmann wrote:
> Without further ado, the following was found:
> 
> Issue:    I<(isalpha(c)\\ || \\ isdigit(c))> → B<(isalpha(>I<c>B<) || isdigit(>I<c>B<))>

The current formatting is correct.  This is documented in man-pages(7):

     Expressions, if not written on a separate indented line, should be
     specified in italics.  Again, the use of nonbreaking spaces may be
     appropriate if the expression is inlined with normal text.


Cheers,
Alex

> 
> "checks for an alphanumeric character; it is equivalent to I<(isalpha(c)\\ ||"
> "\\ isdigit(c))>."
> 

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<https://www.alejandro-colomar.es>

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Re: Issue in man page isalpha.3

[Helge Kreutzmann]

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Hello Alex,
Am Wed, Dec 24, 2025 at 04:24:22PM +0100 schrieb Alejandro Colomar:
> Hi Helge,
> 
> On Wed, Dec 24, 2025 at 02:38:20PM +0000, Helge Kreutzmann wrote:
> > Without further ado, the following was found:
> > 
> > Issue:    I<(isalpha(c)\\ || \\ isdigit(c))> → B<(isalpha(>I<c>B<) || isdigit(>I<c>B<))>
> 
> The current formatting is correct.  This is documented in man-pages(7):
> 
>      Expressions, if not written on a separate indented line, should be
>      specified in italics.  Again, the use of nonbreaking spaces may be
>      appropriate if the expression is inlined with normal text.

I marked it accordingly in our sources. This rule is rather unlogical,
though. (I also marked up similar replies, so I won't answer them
individually).

Thanks for your swift handling and if applicable, happy Holiday
Season.

Greetings

        Helge


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      Dr. Helge Kreutzmann                     debian@helgefjell.de
           Dipl.-Phys.                   http://www.helgefjell.de/debian.php
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Issue in man page isalpha.3

[Helge Kreutzmann]

Without further ado, the following was found:

Issue:    I<(isupper(c)\\ ||\\ islower(c))> → B<(isupper(>I<c>B<) || islower(>I<c>B<))>

"checks for an alphabetic character; in the standard B<\\[dq]C\\[dq]> locale, "
"it is equivalent to I<(isupper(c)\\ ||\\ islower(c))>.  In some locales, "
"there may be additional characters for which B<isalpha>()  is true\\"
"[em]letters which are neither uppercase nor lowercase."

Re: Issue in man page isalpha.3

[Alejandro Colomar]

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On Wed, Dec 24, 2025 at 02:38:21PM +0000, Helge Kreutzmann wrote:
> Without further ado, the following was found:
> 
> Issue:    I<(isupper(c)\\ ||\\ islower(c))> → B<(isupper(>I<c>B<) || islower(>I<c>B<))>

This is expected.


Cheers,
Alex

> 
> "checks for an alphabetic character; in the standard B<\\[dq]C\\[dq]> locale, "
> "it is equivalent to I<(isupper(c)\\ ||\\ islower(c))>.  In some locales, "
> "there may be additional characters for which B<isalpha>()  is true\\"
> "[em]letters which are neither uppercase nor lowercase."

-- 
<https://www.alejandro-colomar.es>

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Issue in man page isalpha.3

[Helge Kreutzmann]

Without further ado, the following was found:

Issue:    I<(isalpha(c)\\ || \\ isdigit(c))> → B<(isalpha(>I<c>B<) || isdigit(>I<c>B<))>

"checks for an alphanumeric character; it is equivalent to I<(isalpha(c)\\ ||"
"\\ isdigit(c))>."

Issue in man page isalpha.3

[Helge Kreutzmann]

Without further ado, the following was found:

Issue:    I<(isupper(c)\\ ||\\ islower(c))> → B<(isupper(>I<c>B<) || islower(>I<c>B<))>

"checks for an alphabetic character; in the standard B<\\[dq]C\\[dq]> locale, "
"it is equivalent to I<(isupper(c)\\ ||\\ islower(c))>.  In some locales, "
"there may be additional characters for which B<isalpha>()  is true\\"
"[em]letters which are neither uppercase nor lowercase."