Ian Tegebo wrote:
On 4/9/07, Nikolai Weibull <[EMAIL PROTECTED]> wrote:
The manSubHeading is defined as
syn match manSubHeading "^\s\{3\}[a-z][a-z ]*[a-z]$"
This will, however, match more lines than I think is intended. It
will, for example, match the line
\t returns are what are recorded and compared with the data git keeps
where "\t" is a horizontal tabulation. I'm guessing that the actual
regex should be
^ \{3\}[a-z][a-z ]*[a-z]$
I hope nobody minds if I take this opportunity to ask a question about
vim's pattern matching.
After reading |pattern| I wonder if the following is more efficient:
syn match manSubHeading '^ \{3\}\l\l\?\l$'
(snip)
The pattern you've provided isn't matching the same thing.
The current one: start the line with exactly three spaces or tabs,
followed by a lower case character, followed by any number of
lower case characters or spaces, up to a lower case character
at the end-of-line.
example: aaa aa
Nikolai W's modifies that to "start the line with exactly three spaces"; the
rest is the same.
example: aaa aa aaa
Yours: start the line with exactly three spaces, followed by two or three
lower case characters, which then terminates the line.
example: aa
Do people find this to make a different for moderate file sizes, e.g.
the man page for 'less' being ~2000 lines?
Depends on the line lengths. Your pattern would terminate quite
quickly on each line, as only 5 or 6 characters may be at the beginning
of matching lines; anything more is a mismatch. The original and NW's
both examine the entire line; so if every line had 1GB of characters, these
two patterns would take considerably longer than yours.
Regards,
Chip Campbell
