[TxMt] Working with/Deleting empty space in documents ?? Please help !
allan at macromates.com
Tue Nov 23 15:03:22 UTC 2004
On Nov 23, 2004, at 14:40, Mats Persson wrote:
>> Record a macro where you do cmd-f, set the find (regex) string to:
>> “\A[ \t\n]+” and press return (to find it), press delete and stop
>> recording. [...]
> THANK YOU !! : ) You've saved me a lot of grief there and what will
> amount to quite a bit of time!. That little Macro is so good, that it
> should (almost ?) be a standard Macro, or something like that.
Probably I should add some default macros to strip white spaces and
what some people refer to as gremlins (although I still haven't figured
out exactly what characters are considered gremlins).
Regarding your macro, in case you want to make it a bit more generic,
e.g. to bind it to alt-delete (and override the default word delete),
you can also do “conditions” in regular expressions, for example if
instead you use this pattern:
\A([ \t\n])?(?(1)[ \t\n]*:[^ \t\n]*)
It will match 1-n white spaces, but if there are no white spaces, it
will instead match 1-n non-white spaces (greedy).
To break it down:
Will match 'foo' in capture register 1 if possible (the parenthesis
makes it a capture, the question mark afterwards makes it a 0-1 repeat,
i.e. optional match).
Then this (later in the same expression):
Will match 'lhs' iff there is something in capture register 1 (i.e.
that we matched 'foo'), otherwise it will match 'rhs'.
iff = if and only if
lhs = left hand side
rhs = right hand side
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