From bb983f30e7ea69604212793f228270f21e8a5b06 Mon Sep 17 00:00:00 2001 From: Ron Yorston Date: Sun, 3 Feb 2019 10:13:17 +0000 Subject: vi: fix faulty undo after autoinsert Enable autoinsert and enter the following with an indent of three spaces: line 1 line 2 Using 'u' to undo the last insert results in: line1e 2 The insertion of the indent hasn't been properly recorded. Since recording insertions is a common operation add a convenience function, undo_push_insert(), to handle this and use it to record the autoindent correctly. function old new delta undo_push_insert - 36 +36 string_insert 133 129 -4 char_insert 518 473 -45 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/2 up/down: 36/-49) Total: -13 bytes Signed-off-by: Ron Yorston Signed-off-by: Denys Vlasenko --- editors/vi.c | 57 ++++++++++++++++++++++----------------------------------- 1 file changed, 22 insertions(+), 35 deletions(-) (limited to 'editors/vi.c') diff --git a/editors/vi.c b/editors/vi.c index 32144abaa..c6adeb311 100644 --- a/editors/vi.c +++ b/editors/vi.c @@ -598,6 +598,7 @@ static void check_context(char); // remember context for '' command #if ENABLE_FEATURE_VI_UNDO static void flush_undo_data(void); static void undo_push(char *, unsigned int, unsigned char); // Push an operation on the undo stack +static void undo_push_insert(char *, int, int); // convenience function static void undo_pop(void); // Undo the last operation # if ENABLE_FEATURE_VI_UNDO_QUEUE static void undo_queue_commit(void); // Flush any queued objects to the undo stack @@ -2011,19 +2012,7 @@ static char *char_insert(char *p, char c, int undo) // insert the char c at 'p' c = get_one_char(); *p = c; #if ENABLE_FEATURE_VI_UNDO - switch (undo) { - case ALLOW_UNDO: - undo_push(p, 1, UNDO_INS); - break; - case ALLOW_UNDO_CHAIN: - undo_push(p, 1, UNDO_INS_CHAIN); - break; -# if ENABLE_FEATURE_VI_UNDO_QUEUE - case ALLOW_UNDO_QUEUED: - undo_push(p, 1, UNDO_INS_QUEUED); - break; -# endif - } + undo_push_insert(p, 1, undo); #else modified_count++; #endif /* ENABLE_FEATURE_VI_UNDO */ @@ -2051,19 +2040,7 @@ static char *char_insert(char *p, char c, int undo) // insert the char c at 'p' if (c == '\n') undo_queue_commit(); # endif - switch (undo) { - case ALLOW_UNDO: - undo_push(p, 1, UNDO_INS); - break; - case ALLOW_UNDO_CHAIN: - undo_push(p, 1, UNDO_INS_CHAIN); - break; -# if ENABLE_FEATURE_VI_UNDO_QUEUE - case ALLOW_UNDO_QUEUED: - undo_push(p, 1, UNDO_INS_QUEUED); - break; -# endif - } + undo_push_insert(p, 1, undo); #else modified_count++; #endif /* ENABLE_FEATURE_VI_UNDO */ @@ -2083,7 +2060,7 @@ static char *char_insert(char *p, char c, int undo) // insert the char c at 'p' p += bias; q += bias; #if ENABLE_FEATURE_VI_UNDO - undo_push(p, len, UNDO_INS); + undo_push_insert(p, len, undo); #endif memcpy(p, q, len); p += len; @@ -2392,6 +2369,23 @@ static void undo_push(char *src, unsigned int length, uint8_t u_type) // Add to modified_count++; } +static void undo_push_insert(char *p, int len, int undo) +{ + switch (undo) { + case ALLOW_UNDO: + undo_push(p, len, UNDO_INS); + break; + case ALLOW_UNDO_CHAIN: + undo_push(p, len, UNDO_INS_CHAIN); + break; +# if ENABLE_FEATURE_VI_UNDO_QUEUE + case ALLOW_UNDO_QUEUED: + undo_push(p, len, UNDO_INS_QUEUED); + break; +# endif + } +} + static void undo_pop(void) // Undo the last operation { int repeat; @@ -2665,14 +2659,7 @@ static uintptr_t string_insert(char *p, const char *s, int undo) // insert the s i = strlen(s); #if ENABLE_FEATURE_VI_UNDO - switch (undo) { - case ALLOW_UNDO: - undo_push(p, i, UNDO_INS); - break; - case ALLOW_UNDO_CHAIN: - undo_push(p, i, UNDO_INS_CHAIN); - break; - } + undo_push_insert(p, i, undo); #endif bias = text_hole_make(p, i); p += bias; -- cgit v1.2.3