import { tabpagewinnr } from "https://deno.land/x/denops_std@v5.0.2/function/mod.ts";
Like winnr() but for tab page {tabarg}.
{tabarg} specifies the number of tab page to be used.
{arg} is used like with winnr():
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When omitted the current window number is returned. This is the window which will be used when going to this tab page.
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When "$" the number of windows is returned.
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When "#" the previous window nr is returned. Useful examples:
tabpagewinnr(1) " current window of tab page 1 tabpagewinnr(4, '$') " number of windows in tab page 4
When {tabarg} is invalid zero is returned.
Can also be used as a method:
GetTabpage()->tabpagewinnr()