diff options
Diffstat (limited to 'src/nvim/state.c')
| -rw-r--r-- | src/nvim/state.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/src/nvim/state.c b/src/nvim/state.c index 9e4c9b2bad..f9a3aaab7f 100644 --- a/src/nvim/state.c +++ b/src/nvim/state.c @@ -39,10 +39,16 @@ void state_enter(VimState *s) int key; getkey: - if (char_avail() || using_script() || input_available()) { - // Don't block for events if there's a character already available for - // processing. Characters can come from mappings, scripts and other - // sources, so this scenario is very common. + // Expand mappings first by calling vpeekc() directly. + // - If vpeekc() returns non-NUL, there is a character already available for processing, so + // don't block for events. vgetc() may still block, in case of an incomplete UTF-8 sequence. + // - If vpeekc() returns NUL, vgetc() will block, and there are three cases: + // - There is no input available. + // - All of available input maps to an empty string. + // - There is an incomplete mapping. + // A blocking wait for a character should only be done in the third case, which is the only + // case of the three where typebuf.tb_len > 0 after vpeekc() returns NUL. + if (vpeekc() != NUL || typebuf.tb_len > 0) { key = safe_vgetc(); } else if (!multiqueue_empty(main_loop.events)) { // Event was made available after the last multiqueue_process_events call @@ -55,9 +61,11 @@ getkey: // mapping engine. (void)os_inchar(NULL, 0, -1, 0, main_loop.events); // If an event was put into the queue, we send K_EVENT directly. - key = !multiqueue_empty(main_loop.events) - ? K_EVENT - : safe_vgetc(); + if (!multiqueue_empty(main_loop.events)) { + key = K_EVENT; + } else { + goto getkey; + } } if (key == K_EVENT) { |