[PATCH v4 0/4] git-p4: Usability enhancements

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Some user interaction with git-p4 is not as user-friendly as the rest of the
Git ecosystem. 

Here are three areas that can be improved on:

1) When a patch fails and the user is prompted, there is no sanitization of
the user input so for a "yes/no" question, if the user enters "YES" instead
of a lowercase "y", they will be re-prompted to enter their answer. 

Commit 1 addresses this by sanitizing the user text by trimming and
lowercasing their input before testing. Now "YES" will succeed!

2) If the command line arguments are incorrect for git-p4, the program
reports that there was a syntax error, but doesn't show what the correct
syntax is.

Commit 2 displays the context help for the failed command.

3) If Git generates an error while attempting to clean up the RCS Keyword
expansions, it currently leaves P4 in an invalid state. Files that were
checked out by P4 are not revereted.

Commit 3 adds and exception handler that catches this condition and issues a
P4 Revert for the files that were previously edited.

4) Git can handle scraping the RCS Keyword expansions out of source files
when it is preparing to submit them to P4. However, if the config value
"git-p4.attemptRCSCleanup" isn't set, it will just report that it fails.

Commit 4 adds a helpful suggestion, that the user might want to set
git-p4.attemptRCSCleanup.

Revisions
=========

v3 - Implemented the various suggestions from Luke and Denton.

I did not add additional exception handling for the EOFError in the prompt
method. I do believe that it is a good idea, but that would change the logic
handling of the existing code to handle this new "no answer" condition and I
didn't want to introduce that at this time.

v4 - Whitespace clean up and commit clarifications.

Submit 3 suggested some clarifications to the commit test and revealed some
whitespace errors.

Ben Keene (4):
  git-p4: yes/no prompts should sanitize user text
  git-p4: show detailed help when parsing options fail
  git-p4: wrap patchRCSKeywords test to revert changes on failure
  git-p4: failure because of RCS keywords should show help

 git-p4.py | 93 +++++++++++++++++++++++++++++++++++--------------------
 1 file changed, 59 insertions(+), 34 deletions(-)


base-commit: ad05a3d8e5a6a06443836b5e40434262d992889a
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-675%2Fseraphire%2Fseraphire%2Fp4-usability-v4
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-675/seraphire/seraphire/p4-usability-v4
Pull-Request: https://github.com/git/git/pull/675

Range-diff vs v3:

 1:  fff93acf44 ! 1:  6c23cd5684 git-p4: yes/no prompts should sanitize user text
     @@ -10,10 +10,10 @@
          will fail.
      
          Create a new function, prompt(prompt_text) where
     -      * promt_text is the text prompt for the user
     -      * choices are extracted from the prompt text [.]
     -          a single letter surrounded by square brackets
     -          is selected as a valid choice.
     +      * prompt_text is the text prompt for the user
     +      * returns a single character where valid return values are
     +          found by inspecting prompt_text for single characters
     +          surrounded by square brackets
      
          This new function must  prompt the user for input and sanitize it by
          converting the response to a lower case string, trimming leading and
     @@ -26,6 +26,7 @@
          choices, remove the loop from the calling code that handles response
          verification.
      
     +    Thanks-to: Denton Liu <Denton Liu>
          Signed-off-by: Ben Keene <seraphire@xxxxxxxxx>
      
       diff --git a/git-p4.py b/git-p4.py
     @@ -119,8 +120,3 @@
                               break
       
               chdir(self.oldWorkingDirectory)
     -@@
     - 
     - if __name__ == '__main__':
     -     main()
     -+
 2:  5c5c981632 = 2:  bfdd3dc517 git-p4: show detailed help when parsing options fail
 3:  c466e79148 = 3:  20f6398693 git-p4: wrap patchRCSKeywords test to revert changes on failure
 4:  00307c3951 = 4:  c78e2e4db1 git-p4: failure because of RCS keywords should show help

-- 
gitgitgadget



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