diff options
Diffstat (limited to 'src/goto-commands.c')
| -rw-r--r-- | src/goto-commands.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/src/goto-commands.c b/src/goto-commands.c index ad802e0..b87fc32 100644 --- a/src/goto-commands.c +++ b/src/goto-commands.c @@ -30,6 +30,7 @@ #include "lexer.h" #include "core-commands.h" #include "undo.h" +#include "interface.h" #include "goto.h" #include "goto-commands.h" @@ -62,15 +63,20 @@ teco_state_label_input(teco_machine_main_t *ctx, gunichar chr, GError **error) } if (chr == '!') { - /* - * NOTE: If the label already existed, its PC will be restored - * on rubout. - * Otherwise, the label will be removed (PC == -1). - */ gssize existing_pc = teco_goto_table_set(&ctx->goto_table, ctx->goto_label.data, ctx->goto_label.len, ctx->macro_pc); + if (existing_pc == ctx->macro_pc) + /* encountered the same label again */ + return &teco_state_start; + if (existing_pc >= 0) { + g_autofree gchar *label_printable = teco_string_echo(ctx->goto_label.data, + ctx->goto_label.len); + teco_interface_msg(TECO_MSG_WARNING, "Ignoring goto label \"%s\" redefinition", + label_printable); + return &teco_state_start; + } if (ctx->parent.must_undo) - teco_goto_table_undo_set(&ctx->goto_table, ctx->goto_label.data, ctx->goto_label.len, existing_pc); + teco_goto_table_undo_remove(&ctx->goto_table, ctx->goto_label.data, ctx->goto_label.len); if (teco_goto_skip_label.len > 0 && !teco_string_cmp(&ctx->goto_label, teco_goto_skip_label.data, teco_goto_skip_label.len)) { |