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feat(terminal): parse current buffer contents in nvim_open_term() (#33720)

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When nvim_open_term() is called with a non-empty buffer, the buffer
contents are piped into the PTY.
This commit is contained in:
Gregory Anders
2025-04-30 16:34:23 -05:00
committed by GitHub
parent 6577d72d81
commit 71f3a9c590
9 changed files with 100 additions and 46 deletions
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19
src/nvim/api/vim.c
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@@ -974,7 +974,7 @@ Buffer nvim_create_buf(Boolean listed, Boolean scratch, Error *err)
/// By default (and currently the only option) the terminal will not be
/// connected to an external process. Instead, input sent on the channel
/// will be echoed directly by the terminal. This is useful to display
/// ANSI terminal sequences returned as part of a rpc message, or similar.
/// ANSI terminal sequences returned as part of an RPC message, or similar.
///
/// Note: to directly initiate the terminal using the right size, display the
/// buffer in a configured window before calling this. For instance, for a
@@ -996,7 +996,8 @@ Buffer nvim_create_buf(Boolean listed, Boolean scratch, Error *err)
/// end, { desc = 'Highlights ANSI termcodes in curbuf' })
/// ```
///
/// @param buffer the buffer to use (expected to be empty)
/// @param buffer Buffer to use. Buffer contents (if any) will be written
/// to the PTY.
/// @param opts Optional parameters.
/// - on_input: Lua callback for input sent, i e keypresses in terminal
/// mode. Note: keypresses are sent raw as they would be to the pty
@@ -1041,12 +1042,26 @@ Integer nvim_open_term(Buffer buffer, Dict(open_term) *opts, Error *err)
.close_cb = term_close,
.force_crlf = GET_BOOL_OR_TRUE(opts, open_term, force_crlf),
};
// Read existing buffer contents (if any)
StringBuilder contents = KV_INITIAL_VALUE;
read_buffer_into(buf, 1, buf->b_ml.ml_line_count, &contents);
channel_incref(chan);
terminal_open(&chan->term, buf, topts);
if (chan->term != NULL) {
terminal_check_size(chan->term);
}
channel_decref(chan);
// Write buffer contents to channel. channel_send takes ownership of the
// buffer so we do not need to free it.
if (contents.size > 0) {
const char *error = NULL;
channel_send(chan->id, contents.items, contents.size, true, &error);
VALIDATE(!error, "%s", error, {});
}
return (Integer)chan->id;
}