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-rw-r--r--src/core-commands.c15
-rw-r--r--tests/testsuite.at4
2 files changed, 16 insertions, 3 deletions
diff --git a/src/core-commands.c b/src/core-commands.c
index 32381f7..6c4ab58 100644
--- a/src/core-commands.c
+++ b/src/core-commands.c
@@ -621,7 +621,8 @@ teco_state_start_cmdline_pop(teco_machine_main_t *ctx, GError **error)
* immediately after dot.
* - If <n> is -1, return the <code> of the character
* immediately preceding dot, ecetera.
- * - If <n> is omitted, the sign prefix is implied.
+ * - If <n> is omitted, 0 is implied.
+ * However \(lq-A\(rq is equivalent to \(lq-1A\(rq.
*
* If the position of the queried character is off-page,
* the command will return -1.
@@ -630,11 +631,19 @@ teco_state_start_cmdline_pop(teco_machine_main_t *ctx, GError **error)
* -2 is returned.
* Incomplete byte sequences are returned as -3.
*/
+/*
+ * NOTE: `A` without arguments is the Append I/O
+ * command in TECO-11. It doesn't make sense in our case.
+ */
static void
teco_state_start_get(teco_machine_main_t *ctx, GError **error)
{
- teco_int_t v;
- if (!teco_expressions_pop_num_calc(&v, teco_num_sign, error))
+ teco_int_t v = 0;
+
+ if (!teco_expressions_eval(FALSE, error))
+ return;
+ if ((teco_expressions_args() || teco_num_sign < 0) &&
+ !teco_expressions_pop_num_calc(&v, teco_num_sign, error))
return;
gssize get_pos = teco_interface_glyphs2bytes_reldot(v);
diff --git a/tests/testsuite.at b/tests/testsuite.at
index 0bd68d3..074e973 100644
--- a/tests/testsuite.at
+++ b/tests/testsuite.at
@@ -259,6 +259,10 @@ TE_CHECK([[10^T]], 0, stdout, ignore)
TE_CHECK([[16,0ED @EB/stdout/ Z-1"N(0/0)' 0A-10"N(0/0)']], 0, ignore, ignore)
AT_CLEANUP
+AT_SETUP([Get character code])
+TE_CHECK([[@I/ABC/ 1J -A-^^A"N(0/0)' A-^^B"N(0/0)' 1A-^^C"N(0/0)']], 0, ignore, ignore)
+AT_CLEANUP
+
AT_SETUP([Convert between line and glyph positions])
TE_CHECK([[@I/1^J2^J3/J 2^QC :^Q-3"N(0/0)']], 0, ignore, ignore)
AT_CLEANUP