diff options
Diffstat (limited to 'src/parser.h')
| -rw-r--r-- | src/parser.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/parser.h b/src/parser.h index 29b96b6..88de830 100644 --- a/src/parser.h +++ b/src/parser.h @@ -23,6 +23,7 @@ #include "sciteco.h" #include "string-utils.h" #include "goto.h" +#include "undo.h" #include "qreg.h" /* @@ -282,6 +283,8 @@ struct teco_machine_t { * Whether side effects must be reverted on rubout. * State machines created within macro calls don't have to * even in interactive mode. + * In fact you MUST not revert side effects if this is FALSE + * as the data no longer exists on the call stack at undo-time. */ gboolean must_undo; }; @@ -361,6 +364,16 @@ typedef struct teco_machine_stringbuilding_t { void teco_machine_stringbuilding_init(teco_machine_stringbuilding_t *ctx, gunichar escape_char, teco_qreg_table_t *locals, gboolean must_undo); +static inline void +teco_machine_stringbuilding_set_codepage(teco_machine_stringbuilding_t *ctx, + guint codepage) +{ + /* NOTE: This is not safe to undo in macro calls. */ + if (ctx->parent.must_undo) + teco_undo_guint(ctx->codepage); + ctx->codepage = codepage; +} + void teco_machine_stringbuilding_reset(teco_machine_stringbuilding_t *ctx); /** |