Indexes incorrect after refining search results

[dwu]

When a previous search is refined, the new indexes are computed incorrectly.

Here's an example for reproducing the error on vgrep's extracted source for version 2.5.6.

Initial search:

$ ./vgrep --no-less lines
Index File                                                Line Content
    0 vgrep.go                                             368 // context lines.
    1 vgrep.go                                             722 fmt.Printf("%q doesn't match format %q\n", input, "comma
<... output snipped ...>
  160 README.md                                             60 - ``refine`` to keep only lines matching the provided regexp pattern from the results, for the duration of the interactive shell (requires a regexp string).
  161 README.md                                             68 ## Context lines

Refining the search:

$ ./vgrep --no-less --interactive
Enter a vgrep command: r Returns
Enter a vgrep command: p
Index File                                     Line Content
   18 vendor/github.com/peterh/liner/common.go   79 // ReadHistory reads scrollback history from r. Returns the number of lines
   18 vendor/github.com/peterh/liner/common.go  110 // WriteHistory writes scrollback history to w. Returns the number of lines
   19 vendor/github.com/peterh/liner/common.go  155 // Returns the history lines starting with prefix
   19 vendor/github.com/peterh/liner/common.go  165 // Returns the history lines matching the intelligent search
Enter a vgrep command: p 18
index 18 out of range (0, 3)

[vrothberg]

Thanks for reaching out! I opened #184 to fix the issue.

[dwu]

Works great. Thanks for the quick fix.