[PATCH] whitespace: more accurate initial-indent highlighting
From: J. Bruce Fields <hidden>
Date: 2016-06-15 22:43:59
Subsystem:
the rest · Maintainer:
Linus Torvalds
Instead of highlighting the entire initial indent, highlight only the problematic spaces. In the case of an indent like ' \t \t' there may be multiple problematic ranges, so it's easiest to emit the highlighting as we go instead of trying rember disjoint ranges and do it all at the end. Signed-off-by: J. Bruce Fields <redacted> --- ws.c | 24 ++++++++++++++++-------- 1 files changed, 16 insertions(+), 8 deletions(-)
diff --git a/ws.c b/ws.c
index aabd509..d09b9df 100644
--- a/ws.c
+++ b/ws.c@@ -150,24 +150,32 @@ unsigned check_and_emit_line(const char *line, int len, unsigned ws_rule, continue; if (line[i] != '\t') break; - if ((ws_rule & WS_SPACE_BEFORE_TAB) && written < i) + if ((ws_rule & WS_SPACE_BEFORE_TAB) && written < i) { result |= WS_SPACE_BEFORE_TAB; + if (stream) { + fputs(ws, stream); + fwrite(line + written, i - written, 1, stream); + fputs(reset, stream); + } + } else if (stream) + fwrite(line + written, i - written, 1, stream); + if (stream) + fwrite(line + i, 1, 1, stream); written = i + 1; } /* Check for indent using non-tab. */ - if ((ws_rule & WS_INDENT_WITH_NON_TAB) && i - written >= 8) + if ((ws_rule & WS_INDENT_WITH_NON_TAB) && i - written >= 8) { result |= WS_INDENT_WITH_NON_TAB; - - if (stream) { - /* Highlight errors in leading whitespace. */ - if ((result & WS_SPACE_BEFORE_TAB) || - (result & WS_INDENT_WITH_NON_TAB)) { + if (stream) { fputs(ws, stream); - fwrite(line, written, 1, stream); + fwrite(line + written, i - written, 1, stream); fputs(reset, stream); } + written = i; + } + if (stream) { /* Now the rest of the line starts at written. * The non-highlighted part ends at trailing_whitespace. */ if (trailing_whitespace == -1)
--
1.5.4.rc0.41.gf723