pager, term: replace execCmd, File

pager: I want to change mailcap command parsing, so a custom
implementation is needed.

term: now it uses a custom buffer for the output stream too.
I don't think there is much difference in performance, but stdio was in
the way.
(Also, this way it will be easier to make it async in the future.)

1 files changed, 3 insertions, 2 deletions

diff --git a/src/main.nim b/src/main.nim
index 49693aab..e58397fe 100644
--- a/src/main.nim
+++ b/src/main.nim
@@ -254,7 +254,8 @@ proc main() =
     stderr.writeLine(res.error)
     quit(1)
   var history = true
-  if ctx.pages.len == 0 and stdin.isatty():
+  let ps = newPosixStream(STDIN_FILENO)
+  if ctx.pages.len == 0 and ps.isatty():
     if ctx.visual:
       ctx.pages.add(config.start.visualHome)
       history = false
@@ -265,7 +266,7 @@ proc main() =
       ctx.pages.add(wwwHome)
       history = false
   if ctx.pages.len == 0 and not config.start.headless:
-    if stdin.isatty():
+    if ps.isatty():
       help(1)
   # make sure tmpdir exists
   discard mkdir(cstring(config.external.tmpdir), 0o700)