add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/lib/subcmd/pager.c
..
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@@ -23,6 +23,13 @@
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 	subcmd_config.pager_env = pager_env;
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 }
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+static const char *forced_pager;
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+
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+void force_pager(const char *pager)
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+{
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+	forced_pager = pager;
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+}
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+
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 static void pager_preexec(void)
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 {
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 	/*
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@@ -66,7 +73,9 @@
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 	const char *pager = getenv(subcmd_config.pager_env);
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 	struct winsize sz;
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-	if (!isatty(1))
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+	if (forced_pager)
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+		pager = forced_pager;
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+	if (!isatty(1) && !forced_pager)
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 		return;
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 	if (ioctl(1, TIOCGWINSZ, &sz) == 0)
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 		pager_columns = sz.ws_col;