From 9425ad37ec95a40dc039169031259161c92cc217 Mon Sep 17 00:00:00 2001 From: Robin Haberkorn Date: Sun, 31 Aug 2025 02:24:11 +0300 Subject: support <:O>: if a label is not found, continue execution after the go-to statement * this is a SciTECO extension - it's not in TECO-11 * Allows for select-case-like constructs with default-clauses as in :Os.^EQa$ !* default *! !s.foo! !* ... *! !s.bar! !* ... *! * Consistent with nOlabel0,label1,...$ if is out of range. Unfortunately this form of computed goto is not applicable when "selecting" by strings or non-consecutive integers. * In order to continue after the <:O> statement, we must keep the program counter along with the label we were looking for. At the end of the macro, the PC is restored instead of throwing an error. * Since that would be very inefficient in loops - where potentially all iterations would result in rescanning till the end of the macro - we now store a completed-flag in the goto table. If it is set while trying to :O to an unknown label, we can just continue execution. --- src/core-commands.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/core-commands.c') diff --git a/src/core-commands.c b/src/core-commands.c index 5fe960b..8ce7a24 100644 --- a/src/core-commands.c +++ b/src/core-commands.c @@ -633,7 +633,7 @@ teco_state_start_input(teco_machine_main_t *ctx, gunichar chr, GError **error) ['$'] = {&teco_state_escape}, ['!'] = {&teco_state_label}, ['O'] = {&teco_state_goto, - .modifier_at = TRUE}, + .modifier_at = TRUE, .modifier_colon = 1}, ['^'] = {&teco_state_control, .modifier_at = TRUE, .modifier_colon = 2}, ['F'] = {&teco_state_fcommand, -- cgit v1.2.3