From f3474ca130601a6c905cb2acbb8f4995a64b106c Mon Sep 17 00:00:00 2001 From: Yousong Zhou Date: Sat, 25 Mar 2017 12:16:36 +0800 Subject: [PATCH] busybox: vi: backporting patches to fix ZZ and :x command Signed-off-by: Yousong Zhou --- package/utils/busybox/Makefile | 2 +- ...ch-file-with-x-when-modified_count-0.patch | 100 ++++++++++++++++++ ...g-a-new-file-with-ZZ-when-no-editing.patch | 53 ++++++++++ 3 files changed, 154 insertions(+), 1 deletion(-) create mode 100644 package/utils/busybox/patches/401-vi-don-t-touch-file-with-x-when-modified_count-0.patch create mode 100644 package/utils/busybox/patches/402-vi-avoid-touching-a-new-file-with-ZZ-when-no-editing.patch diff --git a/package/utils/busybox/Makefile b/package/utils/busybox/Makefile index 0937ef9f30d..b75b4551dd4 100644 --- a/package/utils/busybox/Makefile +++ b/package/utils/busybox/Makefile @@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk PKG_NAME:=busybox PKG_VERSION:=1.26.2 -PKG_RELEASE:=1 +PKG_RELEASE:=2 PKG_FLAGS:=essential PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2 diff --git a/package/utils/busybox/patches/401-vi-don-t-touch-file-with-x-when-modified_count-0.patch b/package/utils/busybox/patches/401-vi-don-t-touch-file-with-x-when-modified_count-0.patch new file mode 100644 index 00000000000..e83999d3038 --- /dev/null +++ b/package/utils/busybox/patches/401-vi-don-t-touch-file-with-x-when-modified_count-0.patch @@ -0,0 +1,100 @@ +From e88608eae24ae5934034e1ecb6c494fefbf1b9ae Mon Sep 17 00:00:00 2001 +From: Denys Vlasenko +Date: Mon, 13 Mar 2017 20:50:42 +0100 +Subject: [PATCH 1/2] vi: don't touch file with :x when modified_count == 0 + +Along with it, there are other changes + + - Check for uppercase X is removed as the expression will be always false and + :X itself is another totally different command in standard vim + - The status line will show number of written lines instead of lines requested + by the colon command. This is also how the standard vim is doing, though + the difference is that '!' has to be explicitly specified in vim to allow + partial writes + +Signed-off-by: Yousong Zhou +Signed-off-by: Denys Vlasenko +--- + editors/vi.c | 43 ++++++++++++++++++++++++++----------------- + 1 file changed, 26 insertions(+), 17 deletions(-) + +--- a/editors/vi.c ++++ b/editors/vi.c +@@ -1038,7 +1038,9 @@ static void colon(char *buf) + || strncmp(p, "wn", cnt) == 0 + || (p[0] == 'x' && !p[1]) + ) { +- cnt = file_write(current_filename, text, end - 1); ++ if (modified_count != 0 || p[0] != 'x') { ++ cnt = file_write(current_filename, text, end - 1); ++ } + if (cnt < 0) { + if (cnt == -1) + status_line_bold("Write error: %s", strerror(errno)); +@@ -1049,8 +1051,9 @@ static void colon(char *buf) + current_filename, + count_lines(text, end - 1), cnt + ); +- if (p[0] == 'x' || p[1] == 'q' || p[1] == 'n' +- || p[0] == 'X' || p[1] == 'Q' || p[1] == 'N' ++ if (p[0] == 'x' ++ || p[1] == 'q' || p[1] == 'n' ++ || p[1] == 'Q' || p[1] == 'N' + ) { + editing = 0; + } +@@ -1480,16 +1483,19 @@ static void colon(char *buf) + goto ret; + } + #endif +- // how many lines in text[]? +- li = count_lines(q, r); +- size = r - q + 1; + //if (useforce) { + // if "fn" is not write-able, chmod u+w + // sprintf(syscmd, "chmod u+w %s", fn); + // system(syscmd); + // forced = TRUE; + //} +- l = file_write(fn, q, r); ++ if (modified_count != 0 || cmd[0] != 'x') { ++ size = r - q + 1; ++ l = file_write(fn, q, r); ++ } else { ++ size = 0; ++ l = 0; ++ } + //if (useforce && forced) { + // chmod u-w + // sprintf(syscmd, "chmod u-w %s", fn); +@@ -1500,17 +1506,20 @@ static void colon(char *buf) + if (l == -1) + status_line_bold_errno(fn); + } else { ++ // how many lines written ++ li = count_lines(q, q + l - 1); + status_line("'%s' %dL, %dC", fn, li, l); +- if (q == text && r == end - 1 && l == size) { +- modified_count = 0; +- last_modified_count = -1; +- } +- if ((cmd[0] == 'x' || cmd[1] == 'q' || cmd[1] == 'n' +- || cmd[0] == 'X' || cmd[1] == 'Q' || cmd[1] == 'N' +- ) +- && l == size +- ) { +- editing = 0; ++ if (l == size) { ++ if (q == text && q + l == end) { ++ modified_count = 0; ++ last_modified_count = -1; ++ } ++ if (cmd[0] == 'x' ++ || cmd[1] == 'q' || cmd[1] == 'n' ++ || cmd[1] == 'Q' || cmd[1] == 'N' ++ ) { ++ editing = 0; ++ } + } + } + #if ENABLE_FEATURE_VI_YANKMARK diff --git a/package/utils/busybox/patches/402-vi-avoid-touching-a-new-file-with-ZZ-when-no-editing.patch b/package/utils/busybox/patches/402-vi-avoid-touching-a-new-file-with-ZZ-when-no-editing.patch new file mode 100644 index 00000000000..b56cf735c25 --- /dev/null +++ b/package/utils/busybox/patches/402-vi-avoid-touching-a-new-file-with-ZZ-when-no-editing.patch @@ -0,0 +1,53 @@ +From 8f3bf4f0d3605b50a8e4c48c89aeabc455f04884 Mon Sep 17 00:00:00 2001 +From: Yousong Zhou +Date: Fri, 24 Mar 2017 21:13:10 +0100 +Subject: [PATCH 2/2] vi: avoid touching a new file with ZZ when no editing has + been done + +This is the behaviour observed with standard vim and busybox vi of at +least 1.22.1. It was changed with commit "32afd3a vi: some +simplifications" which happened before 1.23.0. + +Mistyping filename on command line happens fairly often and it's better +we restore the old behaviour to avoid a few unnecessary flash writes and +sometimes efforts of debugging bugs caused by those unneeded stray +files. + +Signed-off-by: Yousong Zhou +Signed-off-by: Denys Vlasenko +--- + editors/vi.c | 16 ++++++++-------- + 1 file changed, 8 insertions(+), 8 deletions(-) + +--- a/editors/vi.c ++++ b/editors/vi.c +@@ -719,14 +719,6 @@ static int init_text_buffer(char *fn) + { + int rc; + +- flush_undo_data(); +- modified_count = 0; +- last_modified_count = -1; +-#if ENABLE_FEATURE_VI_YANKMARK +- /* init the marks */ +- memset(mark, 0, sizeof(mark)); +-#endif +- + /* allocate/reallocate text buffer */ + free(text); + text_size = 10240; +@@ -741,6 +733,14 @@ static int init_text_buffer(char *fn) + // file doesnt exist. Start empty buf with dummy line + char_insert(text, '\n', NO_UNDO); + } ++ ++ flush_undo_data(); ++ modified_count = 0; ++ last_modified_count = -1; ++#if ENABLE_FEATURE_VI_YANKMARK ++ /* init the marks */ ++ memset(mark, 0, sizeof(mark)); ++#endif + return rc; + } +