Fix data sent to callback of hook_process, improve hook_process by using buffer

Fix: some data was sometimes missing (not sent to callback).
Improvement: use a 64KB buffer for child output and send data to callback only
when buffer is full.

1 files changed, 13 insertions, 0 deletions

diff --git a/doc/it/weechat_plugin_api.it.txt b/doc/it/weechat_plugin_api.it.txt
index 6cd6627be..fdee54429 100644
--- a/doc/it/weechat_plugin_api.it.txt
+++ b/doc/it/weechat_plugin_api.it.txt
@@ -6217,6 +6217,19 @@ Valore restituito:
 
 * puntatore al nuovo hook, NULL in caso di errore
 
+// TRANSLATION MISSING
+[NOTE]
+Buffer size for sending data to callback is 64KB (there are 2 buffers: one for
+stdout and one for stderr).
+If output from child process (stdout or stderr) is longer than 64KB, callback
+will be called more than one time.
+
+// TRANSLATION MISSING
+[IMPORTANT]
+Even if most of times your callback is called only once, you must ensure that
+many calls to callback are ok in your code: you must concatenate data issued by
+many calls and use data only when return code is nonnegative.
+
 Esempio in C:
 
 [source,C]