[unix-history] / usr / lib / learn / editor / L37.2e

#print
Here is something a bit trickier.  We want to add
an extra space after each word "lengthen".  However,
some of the instances of "lengthen" are followed
by commas or right parentheses and we want the sapace
after the comma or right parenthesis in that case.  That
is, the desired transformations are:
   now              new
lengthen xx      lengthen  xx
lengthen, xx     lengthen,  xx
lengthen) xx     lengthen)  xx
lengthen), xx    lengthen),  xx
It should only take one substitute command to do this.
Remember that "*" matches zero or more instances of
whatever precedes it.
Try those changes on the first six lines of the file
"text" in this directory.  Then rewrite the file and
type "ready".
#create Ref
To lengthen  this is easy,
whereas to lengthen,  rather
than to shorten, on the previous line
is hard.  (To lengthen)  is an
infinitive.  I said to him, (please lengthen),  and
he did so.
Why not lengthen this word?  Notice it is on line 7.
#create text
To lengthen this is easy,
whereas to lengthen, rather
than to shorten, on the previous line
is hard.  (To lengthen) is an
infinitive.  I said to him, (please lengthen), and
he did so.
Why not lengthen this word?  Notice it is on line 7.
#user
#cmp text Ref
#log
#next
37.2f 5
Commit	Line	Data
00b28f22 TL	1	#print
	2	Here is something a bit trickier. We want to add
	3	an extra space after each word "lengthen". However,
	4	some of the instances of "lengthen" are followed
	5	by commas or right parentheses and we want the sapace
	6	after the comma or right parenthesis in that case. That
	7	is, the desired transformations are:
	8	now new
	9	lengthen xx lengthen xx
	10	lengthen, xx lengthen, xx
	11	lengthen) xx lengthen) xx
	12	lengthen), xx lengthen), xx
	13	It should only take one substitute command to do this.
	14	Remember that "*" matches zero or more instances of
	15	whatever precedes it.
	16	Try those changes on the first six lines of the file
	17	"text" in this directory. Then rewrite the file and
	18	type "ready".
	19	#create Ref
	20	To lengthen this is easy,
	21	whereas to lengthen, rather
	22	than to shorten, on the previous line
	23	is hard. (To lengthen) is an
	24	infinitive. I said to him, (please lengthen), and
	25	he did so.
	26	Why not lengthen this word? Notice it is on line 7.
	27	#create text
	28	To lengthen this is easy,
	29	whereas to lengthen, rather
	30	than to shorten, on the previous line
	31	is hard. (To lengthen) is an
	32	infinitive. I said to him, (please lengthen), and
	33	he did so.
	34	Why not lengthen this word? Notice it is on line 7.
	35	#user
	36	#cmp text Ref
	37	#log
	38	#next
	39	37.2f 5