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*: misc improvements to config command and substitute-path rules #3335

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merged 1 commit into from May 2, 2023

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aarzilli
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A series of interconnected changes to both the terminal command
'config', DAP command 'dlv config', quality of life improvements to how
substitute-path works, and better documentation.

  • Let 'config substitute-path' show the current substitute path rules
  • Add a -clear command to 'config substitute-path'
  • Support 'config-debug-info-directories'
  • rewrite SubstitutePath to be platform independent (see below)
  • document path substitution more

Regarding the rewrite of SubstitutePath: the previous version used
runtime.GOOS and filepath.IsAbs to determine which filepath separator to use
and if matching should be case insensitive. This is wrong in all situations
where the client and server run on different OSes, when examining core files
and when cross-compilation is involved.

The new version of SubstitutePath checks the rules and the input path to
determine if Windows is involved in the process, if it looks like it is it
switches to case-insensitive matching. It uses a lax version of
filepath.IsAbs to determine if a path is absolute and tries to avoid having
to select a path separator as much as possible

Fixes #2891, #2890, #2889, #3179, #3332

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@derekparker derekparker left a comment

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A few questions / comments.

Documentation/cli/substitutepath.md Outdated Show resolved Hide resolved
pkg/locspec/locations.go Outdated Show resolved Hide resolved
pkg/locspec/locations.go Show resolved Hide resolved
pkg/locspec/locations.go Outdated Show resolved Hide resolved
@aarzilli
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Rebased and added #3343 to the list of issues this fixes.

A series of interconnected changes to both the terminal command
'config', DAP command 'dlv config', quality of life improvements to how
substitute-path works, and better documentation.

- Let 'config substitute-path' show the current substitute path rules
- Add a -clear command to 'config substitute-path'
- Support 'config-debug-info-directories'
- rewrite SubstitutePath to be platform independent (see below)
- document path substitution more

Regarding the rewrite of SubstitutePath: the previous version used
runtime.GOOS and filepath.IsAbs to determine which filepath separator to use
and if matching should be case insensitive. This is wrong in all situations
where the client and server run on different OSes, when examining core files
and when cross-compilation is involved.

The new version of SubstitutePath checks the rules and the input path to
determine if Windows is involved in the process, if it looks like it is it
switches to case-insensitive matching. It uses a lax version of
filepath.IsAbs to determine if a path is absolute and tries to avoid having
to select a path separator as much as possible

Fixes go-delve#2891, go-delve#2890, go-delve#2889, go-delve#3179, go-delve#3332, go-delve#3343
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@derekparker derekparker left a comment

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LGTM

@derekparker derekparker merged commit 13ad7dc into go-delve:master May 2, 2023
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Successfully merging this pull request may close these issues.

service/dap: dlv config <param> prints errors with confusing parameter names
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