Server version compare in tmux.conf

[japin li]

Hi, Nicholas

I found that Tmux has a version variable in string format (like next-3.5). However, this does not facilitate easier version comparison.  Currently, I use the following to do version comparsion:

%if #{>=:#{s|next-||:version},3.5}

do something

%endif

 Would it be possible to add a numeric server version? Or is there another effective way to compare versions?

[Nicholas Marriott]

Couldn't you just remove all non-numbers from the string to get a number version?

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[japin li]

 Thanks, it's pretty cool.

On Sunday, April 20, 2025, Nicholas Marriott <nicholas...@gmail.com> wrote:

Couldn't you just remove all non-numbers from the string to get a number version?

On Fri, 18 Apr 2025, 06:53 japin li, <japin...@gmail.com> wrote:

Hi, Nicholas

I found that Tmux has a version variable in string format (like next-3.5). However, this does not facilitate easier version comparison.  Currently, I use the following to do version comparsion:

%if #{>=:#{s|next-||:version},3.5}

do something

%endif

 Would it be possible to add a numeric server version? Or is there another effective way to compare versions?

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[japin li]

After some digging, it may not work because we have versions such as 3.2 and 3.2a.

 If we remove all non-numbers, then 3.2a and 3.2 are combined. I'm not sure about this.

On Saturday, April 26, 2025 at 2:29:52 PM UTC+8 japin li wrote:

 Thanks, it's pretty cool.

On Sunday, April 20, 2025, Nicholas Marriott <nicholas...@gmail.com> wrote:

Couldn't you just remove all non-numbers from the string to get a number version?

On Fri, 18 Apr 2025, 06:53 japin li, <japin...@gmail.com> wrote:

Hi, Nicholas

I found that Tmux has a version variable in string format (like next-3.5). However, this does not facilitate easier version comparison.  Currently, I use the following to do version comparsion:

%if #{>=:#{s|next-||:version},3.5}

do something

%endif

 Would it be possible to add a numeric server version? Or is there another effective way to compare versions?

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[Nicholas Marriott]

3.2 and 3.2a should be pretty much the same, only minor bug fixes. If you need to know the difference you would need to check for the "a" as well.

To view this discussion, visit https://groups.google.com/d/msgid/tmux-users/f98d5057-8566-4d91-a8f3-1100ded98fecn%40googlegroups.com.

[Michael Grant]

What if you append a '0' to the end if there's no letter, and if there is a letter, convert that to a number.  How about something like this:

echo '3.2a' | sed -e 's/\([0-9]\)$/\10/;s/\.//g' | tr '0123456789abcdefghi' '0123456789123456789'

which produces 321 and without the a produces 320.  Thing is, in the future, who knows if a version 9a or 14b.6 will come out.

However, I agree, adding a numeric version would be a good idea.  I have also had to do above hacks like the above on other things.

[japin li]

On Sun, Apr 27, 2025 at 6:58 PM Michael Grant <michae...@gmail.com> wrote:

What if you append a '0' to the end if there's no letter, and if there is a letter, convert that to a number.  How about something like this:

echo '3.2a' | sed -e 's/\([0-9]\)$/\10/;s/\.//g' | tr '0123456789abcdefghi' '0123456789123456789'

Thank you for this suggestion. It works, but it's cumbersome.

which produces 321 and without the a produces 320.  Thing is, in the future, who knows if a version 9a or 14b.6 will come out.

However, I agree, adding a numeric version would be a good idea.  I have also had to do above hacks like the above on other things.

+1 

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