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Improve PAGER defaults

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We basically need less(1), nothing else will work correctly.

I'm not sure where I took pager(1) from, might be a Debian thing.
This commit is contained in:
Přemysl Eric Janouch
2020-09-28 21:34:09 +02:00
parent 9a2f6ab5cf
commit e60ffeeb20
1 changed files with 4 additions and 2 deletions
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6
sdn.cpp
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@@ -879,7 +879,9 @@ fun run_program (initializer_list<const char*> list, const string &filename) {
} }
fun view (const string &filename) { fun view (const string &filename) {
run_program ({(const char *) getenv ("PAGER"), "pager", "cat"}, filename); // XXX: we cannot realistically detect that the pager hasn't made a pause
// at the end of the file, so we can't ensure all contents have been seen
run_program ({(const char *) getenv ("PAGER"), "less", "cat"}, filename);
} }
fun edit (const string &filename) { fun edit (const string &filename) {
@@ -903,7 +905,7 @@ fun run_pager (FILE *contents) {
dup2 (fileno (contents), STDIN_FILENO); dup2 (fileno (contents), STDIN_FILENO);
// Behaviour copies man-db's man(1), similar to POSIX man(1) // Behaviour copies man-db's man(1), similar to POSIX man(1)
for (auto pager : {(const char *) getenv ("PAGER"), "pager", "cat"}) for (auto pager : {(const char *) getenv ("PAGER"), "less", "cat"})
if (pager) execl ("/bin/sh", "/bin/sh", "-c", pager, NULL); if (pager) execl ("/bin/sh", "/bin/sh", "-c", pager, NULL);
_exit (EXIT_FAILURE); _exit (EXIT_FAILURE);
default: default: